Title[TITTLE caps loch at word tides[so blogspot.com coordinator on hummingbird of last change to rolodex word form you would be the best at comprehension of size FONT to word TITTLE, thank you]: Word Repose demands identification for Cantore Arithmetic as theses Programs are Valuable to word Staff and to date our resilience has been ignored to my knowledge. In basic word, there has been no-repose. Site Map at: ISRM is an IRS 501(c)(3) (A57 - Science and Technology Museums) non-profit corporation through the State of Colorado. Colorado ID Number 20181884948, IRS EIN 83-2486423.

 

Cantore Arithmetic is able to state word computer to word mistake as the input to the genre is not in word specific[sake] and has brought to the Public at word large equated words print leaving Autumn as the Season and the leaves as the rake:  Word Example:  Google, search bar[people go to the East Coast to see the leaves in Autumn as that is when all the leaves change colors], People also ask...

Two questions with a drop down option to read text from word quested

What is the best time to see fall colors on the east coast?

When to Go For the Best Fall Colors If you want to see the most vibrant fall foliage on the East Coast, you need to travel during the peak leaf-changing season, which is around six weeks between September and October. Leaves tend to change colors at higher elevations first, and at northern latitudes before southern.

Is Maine or Vermont better for fall foliage?  

Maine typically sees fall colours earlier than other states in New England due to its northern location and cooler temperatures, so if you are planning a tour through New England in the Fall, then Maine would be a good place to start.

So, word if[IF] all I wanted was words foliage, word foliage[Foliage] equated word plasma and word comma, so the following word agony is understanding the information and not surpassing the word brilliance as Slide Rule Men are an older registry to what is the word distance.

So in REM Sleep there were four pyramids with an Atlas in each one and that is a word that is word direct and word associate to word cap.  Now, watch the Film The Fifth Element and just those four men in my REM sleep are Bourne ready!!

1.  The Stones Are Saved Scene - The Fifth Element | Bruce Willis, Milla Jovovich

2.  The Fifth Element - Figuring the stones scene | Ending Scene | Bruce Willis | Milla Jovovich | Chris 

3.  

Pyramidion of Amenemhat III from the Black Pyramid, Twelfth Dynasty. Egyptian Museum, Cairo. 

4.  

Image : The Thinker Front View 

5.  See this site first:  excavated from solid stone in stone. FILENAMESTNMTZ_19980601_01.TIFCOPYRIGHT©2005 George SteinmetzIMAGE SIZE7157x4822 / 98.8MBWEB STATEMENT URLwww.georgesteinmetz.com 

6.  The Fifth Element: THE CASE WITH FOUR STONES IN IT! 

7.  22 22nd Avenue, West Clay Park word stoked the City of San Francisco as the icon at the top of the excavated stone is represented on stamp on bridge in word solid areas on the word grounded:  Bob Ross, Inc. is not City Works 22 in this post, so Safeway Select did not work so Petrini’s is the word set, circa and date to register Hemway Terrace!! 

So, Bob the Science guy on Youtube[Introduction to the Slide Rule] stated:

1.  

1941 IIT Engineering  

Text above to word placed Bob, the Science guy places appropriate man[Engineer] is word sleeve unless he comes up with a better name for aptitude, and, the list showing from the Colorado ID Number 20181884948, IRS EIN 83-2486423 examples that Cantore Arithmetic is able to be word personal and yet involve personal sleeves for said computers.

International Slide Rule Museum (ISRM)

ISRM is the world's largest free digital repository of all things concerning slide rules and other math artifacts.
As of 2023, ISRM is celebrating its 20th Anniversary! 

ISRM is an IRS 501(c)(3) (A57 - Science and Technology Museums) non-profit corporation through the State of Colorado. Colorado ID Number 20181884948, IRS EIN 83-2486423. - ISRM Advisory Board of Directors.

Appoullot, Arnault & Paineau, Barbotheu,  Besse,  Charpentier, Lenoir, Lenoir-Gravet, Logarecta, MARC - UNIS French Standard Slide Rules,  Maurice Damien, Richer,  Tavernier-Gravet, .  Note: When you read "Brevet SGG" or "Brevet SGDG" on a French item, this means, in French: "Brevet Sans Garantie Du Gouvernement", translated to English: "Patented without government warranty". ie, if the government does not restrict or warrants the product, than the idea is considered original. Also visit the French manufacturer Graphoplex Slide Rule Gallery Another excellent Museum that displays French Slide Rules is photocalcul.com - Gonzalo Martin's website (in French and Spanish). Many images from photocalcul.com are shown in this, and other ISRM galleries.

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Appoullot

Appoullot T2 LogZ Spiral Slide Rule (c.1930) REF	Appoullot T2 LogZ Spiral Slide Rule Made in France, Invented by Leon Appoullot in Paris, France. 14cm diameter - Reference patents FR547870 and GB180695 Front Scale: C, L, 3 revolution number scale, special root scales, tangent & sine scales. Scales wrap in a curious artistic way. Outer scales have accessory vernier scales for increased precision. Note: 3 revolution spiral number scale is about 60 cm long. Material: 13 cm diameter irregularly shaped enameled aluminum disc, with two transparent celluloid cursors. Fitted leather case. Archive - Photo courtesy of the Ed Chamberlain Collection
Appoullot T3 LogZ Spiral Slide Rule (c.1930) REF	Appoullot T3 LogZ Spiral Slide Rule Made in France, Invented by Leon Appoullot in Paris, France. 14cm diameter- Reference patents FR547870 and GB180695 Front Scale: C, L, 3 revolution number scale, special root scales, tangent & sine scales. Scales wrap in a curious artistic way. Outer scales have accessory vernier scales for increased precision. Note: 3 revolution spiral number scale is about 79 cm long. Material: 20 cm diameter irregularly shaped enameled aluminum discs, with two transparent celluloid cursors. Fitted leather case. Archive - Photo courtesy of the Ed Chamberlain Collection
Appoullot T4 LogZ Spiral Slide Rule (c.1930) Need Image	Appoullot T3 LogZ Spiral Slide Rule Made in France, Invented by L. Appoullot in Paris, France. Front Scale: C, L, 3 revolution number scale, special root scales, tangent & sine scales. Scales wrap in a curious artistic way. Outer scales have accessory vernier scales for increased precision. Note: 3 revolution spiral number scale is about 140 cm long. Material: 30 cm diameter irregularly shaped enameled aluminum discs, with two transparent celluloid cursors..

8/6/2024 5:47:06 PM

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 Arnault & Paineau, Montrouge, France

This calculator has no maker name or model on it, but some inquiry placed it as the "Calculateur a Disque Mobile" – calculator with a moveable disk – invented in France by Jules Arnault and Louis Paineau and patented FR 516,480 in 1921. The manual bears a copyright by Mathieu et Lefevre, Montrouge (a suburb of Paris), the firm that fabricated the device. References: The Arnault-Paineau calculator, Nathan Zeldes Collection in Israel. About A French Slide Rule by Willy Robbrecht ,JOS V21.2P52 Arnault & Paineau Circular Slide Rule (Carrees & Cubiques) ISRM 24.07.04.40.X Arnault & Paineau Circular Slide Rule( Carrees & Cubiques) Made in France c1921 by Arnault & Paineau  Materials: 2 piece 4mm overall thickness, 3mm aluminum substrate and 1mm outer scale and rotor. There are 8 rivets that hold the thin outer scale sheet to the thicker base. Celluloid cursor, brass knobs, wood backing and frame. This one is missing the brass knob on the cursor. (see othe examples in the links). Front Scale: G Cos, Sin, F[L scale], E[C scale], D[CI scale]( C[D scale], B[B scale 1st decade], A[B scale 2nd decade]) Note: It seems to be designed specifically for calculating the circumferance and areas of circles. Tom Dilatush Collection     Manual (French) Courtesy of Nathan Zeldes   Arnault & Paineau Banque No.5 Circlular Slide Rule (Commercial) REF Arnault & Paineau Banque No.5 Circlular Slide Rule (Commercial) Made in France c1921 by Arnault & Paineau  Materials: 2 piece 12cm Square, 4mm overall thickness, 3mm aluminum substrate and 1mm outer scale and rotor. Celluloid cursor, brass knobs. wood backing and frame. This one is missing the brass knob on the cursor. (see othe examples in the links). Front Scale: C, B [ A ] Scan By Gonzalo Martin Collection, photocalcul.com Manual (French) Courtesy of Gonzalo Martin  J.D. Barbotheu, 17 Reu Béranger, Paris, France The company Barbotheu was founded by Georges Barbotheu (1857-1925) in 1885. This French precision instruments maker was established in Paris. Three addresses are known in Paris: 16 Rue Saint Gilles, 1888; 10 Rue Saint Gilles, 1889 - 1892; and 17 Rue Béranger, 1893 - 1913.. They had a factory rue de la Jarry in Vincennes. They were active at least until 1938 (listed in a directory of French companies). Some of the slide rules bearing this brand might have been actually produced by Tavernier-Gravet. Courtesy of Rod Lovett. Barbotheu Mannheim (early) Slide Rule  REF Barbotheu Mannheim (early) Slide Rule c1900 Made in 17 Reu Béranger, Paris, France by J.D. Barbotheu. Material is Pearwood. Front Scale (Labels given as formula): 25cm // A [ B, C ] D || ?? Back Scale: [ S, L, T ] Well: 27cm-52cm Back Label and well: Equivalents in French Archive - HSRC Collection Barbotheu 102 Mannheim (Lot 51) Amber Lens Slide Rule  ISRM 24.07.04.49 Barbotheu 102 Mannheim (Lot 51) Amber Lens Slide Rule c1905 Made in France by J.D. Barbotheu. Material is Pearwood. Lot 51 Front Scale (Labels given as formula): 25cm // A [ B, C ] D || 25cm Back Scale: [ S, L, T ] Back Label and well: Equivalents in French Tom Dilatush Collection Barbotheu No.922 Universelle Slide Rule  ISRM 24.07.04.43 Barbotheu No.922 Universelle Slide Rule Made in France by J.D. Barbotheu. Material is Pearwood Front Scale (Labels given as formula): 25cm // DIF [ CI, B, C ] DF, KF || 10cm-0-15cm Back Scale: [ S, Log, T ] Back Label and well: Equivalents in French Tom Dilatush Collection Barbotheu Mannheim V1 Slide Rule  24.07.04.67 Barbotheu Mannheim V1 Slide Rule c1905 Made in France by J.D. Barbotheu. Material is Pearwood. Lot 85 Front Scale (Labels given as formula): 25cm // K, A [ B, CI, C ] D || 28cm Back Scale: [ S, L, T ] 3 Hairline cursor. Well: 27-56cm Back Label and well: Equivalents in French Tom Dilatush Collection Barbotheu Mannheim V2 Slide Rule  REF Barbotheu Mannheim V2 Slide Rule c1905 Made in France by J.D. Barbotheu. Material is Pearwood. Lot 18 Front Scale (Labels given as formula): 25cm // K, A [ B, CI, C ] D || 28cm Back Scale: [ S, L, T ] Back Label and well: Equivalents in French Tom Dilatush Collection Besse Besse Cadran Comparateur (Dial Comparator) Besse Cadran Comparateur (Dial Comparator) Made in France, Invented by Besse, Pharmacien, a (in) Montdidier (France) 14cm diameter Front Scale: Units Conversion of Pharmaceutical weights. Text on face: Les formalites vouldes par la loi ayant ete remplies, sera regarde comme contrefart tout exemplaire qui ne portera pas la signature de l'Auteur, Besse. Archive - 2009 Phillip Weiss Auction Charpentier Charpentier Calculimetre Charpentier Calculimetre Made in France - 5.92cm diameter Front Scale: D, C ( W1, W2) Back scale: L, S, T Archive - Giovanni Breda Collection Presentation by Gonzola Martin, 2009, France (704KB pdf)  Original Instruction Sheet, French (2.5MB pdf)     Lenoir (1820-1827), Gravet-Lenoir (1827-1867) See L introduction des regles A calcul en France (1815-1852) by Marc Thomas. IM2010 proceedings Étienne Lenoir - (1744-1832) Paris, France. A French scientific instrument maker and inventor of the repeating circle. When hired by Jean-Charles de Borda around 1772 to work on the reflecting circle, he was about thirty years old and nearly illiterate. However, his intelligence and mechanical genius allowed him to perform work that few others could perform. He played a significant role in the improvements to the reflecting circle and later used this experience in inventing the repeating circle. As a result of this work, he became known as the pre-eminent maker of instruments for astronomy, navigation and surveying in France. In 1787, the king of France appointed him certificated engineer to the king. He created the instruments used on all the major French geodetic surveying projects and major naval expeditions of the time. Lenoir Rock in Antartica is named after him. He worked primarily for the Commission des Poids et Mesures (Weights and Measures Commission) after 1792 and for the Commission du Metre (Metre Commission - for the determination of the metric unit of length, the metre). For these commissions, he produced the instruments used to measure the meridian arc and created the platinum rules for baseline measurements. In 1793, he made and signed the provisional standard brass metre. He also invented a comparator for the measurement of the definitive standard metre. Lenoir was also a member of the Commission temporaire des Arts (1793-1794). He was made a member of the Bureau des Longitudes in 1814 and received the Legion of Honour. from Museum Galileo His son, Paul-Étienne Lenoir(1776-1827) died before his father (1832). Their work was carried on by one of their employees named, Mabire, who took over the workshop at 14 Rue Cassette in Paris. It is Gravet that succeeds Lenoir as far as slide ruler were concerned but little is known about Gravet.  also see  Tavernier-Gravet (successor to Gravet-Lenoir) (1867-1972) Lenoir SOHO c1825 26cm ISRM 24.07.04.57.X  Lenoir SOHO c1825 26cm Made in France - SOHO type scales . 200 years old. Front Scale: A [ B, C ] D Well: 26-58 CM  Back of Slide: 0-50, 0-40,L Back: Guniers scales, Conversions, Weights Tom Dilatush Collection, USA A Very Early Lenoir Slide Rule by Marc Thomas, France. Journal of the Oughtred Society, Volume 19, Number 1, Spring, 2010 Lenoir SOHO c1825 26cm REF Lenoir SOHO c1825 26cm Made in France - SOHO type scales  Front Scale: A [ B, C ] D Well: 26-52 CM, 9.5-12.25 Inch   Back of Slide: ?,?,?,L Back: Conversions, Weights Archive - Etienne Pommel Collection, France, Courtesy of photocalcul.com Details Gravet-Lenoir SOHO 1829-1844 25cm REF Gravet-Lenoir SOHO 1829-1844 25cm Made in France - 14 R. Cassette, Paris. SOHO type scales Front Scale: A [ B, C ] D Well: 26-52 CM, 9.5-12.25 Inch   Back of Slide: ?,?,?,L Back: Diviseurs pour, Conversions, Weights Archive - Etienne Pommel Collection, France, Courtesy of photocalcul.com Details  Logarecta Déposé REF Logarecta Déposé - Malta Logarithmic Scales Logarecta Déposé - Malta Logarithmic Scales Made in Belgium  Front Scale: BackScale: Trig scales Archive - Herman van Herwijnen's SR Catalogue    MARC Slide Rules With UNIS marks. Union Nationale Inter Syndacale is French organization monitoring the quality of French goods. The "UNIS" marking found on slide rules was more or less equivalent to stating that the product was "Made in France". See more samples of Slide Rules marked with "UNIS" in United States gallery.. These were exported to the USA and rebranded for Guedon and Dietzgen. See other rare French slide rules and sectors in the Rarities gallery, and Troncets (Addiators) in the Mechanical Addersgallery. MARC Generic Mannheim 13cm (Thin-film cursor) ISRM 22.10.14.10 MARC Generic Mannheim 13cm (Thin-film cursor) Made in France Front Scale: 13cm // A [ B, C ] D Back slide: Blank Gifted by John Holmes of Washington, D.C.    MARC Generic Mannheim  ISRM 14.07.02.92 MARC Generic Mannheim Made in France Front Scale: 5-1/2in // A [ B, C ] D Promo (on back and on sleeve: The Everstick Anchor Company, Fairfield, Iowa Back slide: Blank Gifted by Ed Millis, Dallas, Texas    MARC Pocket Rietz  ISRM 22.07.06.67 MARC Pocket Rietz Made in France Front Scale (Extended): 5-1/2in // K, A [ B, CI, C ] D, L Back: 15cm [ S, L, T ] Gifted by Cindy Tate, Bozeman, Monartana. Victor B. tate Collection   MARC Electro - Spéciale pour Électriciens  REF  MARC Electro - - Spéciale pour Électriciens Made in France, UNIS marks Front Scale: 13cm // KW, A [ B, C ] D,  Well: DYN MOT Slide Rule Scan Courtesy of Oliver Cassou Collection, France 1932 MARC Advertisement Courtesy of  reglasdecalculo.com MARC No 5 Électriciens ISRM 13.06.20.06 MARC No 5 Électriciens Made in France, UNIS marks Front Scale: 13cm // A (KW) [ B (KW), C (CV)] D (CV) Well: DYN MOT Donated by Phillip Rodley, Upper Hutt, New Zealand Instructions Instructions (PDF) MARC No 6  REF MARC No 6 Made in France, UNIS marks Front Scale: 13cm // K, A [ B, CI, C ] D, L  Slide: [ S,S&T, T] Archive - Herman van Herwijnen's SR Catalogue   MARC Thin Film Cursor ISRM 14.07.02.94 MARC Thin Film Cursor Made in France, UNIS marks Front Scale: 13cm // A [ B, C ] D Back: 13cm Scale: Gift of Ed Millis, Dallas, Texas   MARC Metric, Thin Film Cursor ISRM 17.05.02.53 MARC Metal Framed Cursor Made in France, UNIS marks Front Scale: 13cm // A [ B, C ] D Back: 13cm scale. Back Promo: Underfeed Stoker Company Limited Gift of Mike Weaver, U.K. MARC Régle  REF MARC Réglec Made in France, UNIS marks Front Scale: 13cm // K, A [ B, CI, C ] D, L  Slide: [ S,S&T, T] Archive - Herman van Herwijnen's SR Catalogue  Maurice Damien 39, Rue des Mathurins, Paris Maurice Damien Universal Calculation Ruler (Regle A Calculus) ISRM 13.02.13.01 Maurice Damien Universal Calculation Ruler (Regle A Calculus) Made in France - c1930 Front Scale (extended): 27cm // K, A [ B, CI, C ] D, L \\ 10.5inch Back scale: [ S, S&T, T ] Multilined Cursor (repaired, does not seem to be the original frame, which should be metal) Note:28cm long, Extruded Aluminum construction, Railroad Track style divisions, photo printed using 'Photal Process' Gift of Phillip Rodley of UpperHutt, New Zealand This slide rule and others in the ISRM archives and galleries were donated through the generosity and support of Phillip Rodley. Phil is very enthusiatic in finding slide rules in New Zealand that are not available to the rest of the world, and gifting them to ISRM. He enjoys the American brands that have leather sleeves and belt loops. Maurice Damien Universal Ruler (Regle A Calculus)  REF Maurice Damien Universal Ruler (Regle A Calculus) Made in France - c1930 Front Scale (extended): 27cm // K, A [ B, CI, C ] D, L \\ 10.5inch Back scale: [ S, S&T, T ] Multilined Cursor (repaired, does not seem to be the original frame, which should be metal) Note:28cm long, Extruded Aluminum construction, Railroad Track style divisions, photo printed using 'Photal Process' This version has a flat back plate as compared to the one in the ISRM collection. Scan By Gonzalo Martin Collection, photocalcul.com Box label Maurice Damien Regle A Calculus No16  REF Maurice Damien Regle A Calculus No16 Made in France - c1930 Front Scale (extended): 27cm // K, A [ B, CI, C ] D, L \\ 10.5inch Back scale: [ S, S&T, T ] Multilined Cursor (repaired, does not seem to be the original frame, which should be metal) Note:28cm long, Extruded Aluminum construction, Railroad Track style divisions, photo printed using 'Photal Process' This version has a stamped back plate similar to the 'Universal' in the ISRM collection. Scan By Gonzalo Martin Collection, photocalcul.com Maurice Damien AAF40-4 Aviation Flight Computer  REF Maurice Damien AAF40-4 Aviation Flight Computer Made in France - c1930 Front Scale (extended): Distance (Time (Minutes), Time (Hours), Temp Air, Altimeter Correction Back scale: Course and Wind Drift Correction Note: Photo printed using 'Photal Process' Scan By Gonzalo Martin Collection, photocalcul.com Jean-Francois Richer, L'Hermite, LeJard et. Cie, Paris Maison Richer LeJard CIE Tachymetrical Slide Rule MVK 24.07.04.71 Harvard University Collection of Scientific Instruments has a brass version of the Richer Tachymetrical: Maison Richer LeJard CIE Tachymetrical Slide Rule Made in France, Designed by Jean-Francois Richer 1743-1820 who was renowned for his divided scales. Maison Richer (translates to Richer House), Guyard & Canary (Paris)” Note: It is identical to one made by the Paris firm H. Morin, then at Rue Boursault nr. 3. It is possible that LeJard c1870 was the successor company to Maison Richer and then H. Morin c1882 obtained the Richer tooling to make the scales. Dimensions: 0.8 x 43.1 x 3.1 cm (5/16 x 16 15/16 x 1 1/4 in.) Material: German Silver stored in a mahagony clam shell box. Note: other variations were made from brass. Front Scale: Nomb [ Sinus Nomb ] Nomb Back of Slide: Nomb [ Tang, P.E. , Sin-2 , Sin-2 ] Nomb Note: Nomb is short for Nombre or Number. Michael Konshak Collection.  Reference page 7 of this 2005 UKSRC paper by Otto van Poelje: Stadia or Tachymetrical Slide Rules   Close ups of the Sinus Caract Side     Close ups of theTang P.E. Side. TAVERNIER-GRAVET Tavernier-Gravet (1867-1972) Instruments de Mathématiques Fabrique de Régles a Calul, fondee en 1820 19, Rue Mayet; ci-devant, 39, rue de Babylone, Paris, France Tavernier-Gravet Slide Rules Chronology by Panagiotis Venetsianos, JOS Vol.11, No.2, Fall 2002 Tavernier-Gravet (Early Lenoir Design) c1840-1869 ISRM 24.07.04.70 Tavernier-Gravet (Early Lenoir Design) c1840-1869 Made in France by Tavernier-Gravet Secretan A Paris, 39 Rue de Babylon, Paris.- design by Lenoir. Front Scale: 26cm, A [ B, B ] C || 26cm Well: 26-52CM  Back of Slide: S 0-90, T 0-45,L Back: Conversions, Weights (partial label in French) Tom Dilatush Collection, USA K&E Early Import  REF K&E Early Import Made in France for K&E by Tavernier-Gravet Front Scale: 20cm // A [ B, C ] D || 20cm Back Scale: [ S, L, T ] Back: Equivalents (conversion factors) Note: Medaillis d'Or 1878 et 1889 - This means a gold medal for excellence Archive: Herman van Herwijnen SRC  Tavernier-Gravet REF Tavernier-Gravet - c1900 Made in France- Rue Mayet 19, Paris Front Scale: 25cm // A, DF [ CF, CI, C ] D \\ 25cm  Back Scale (Slide): [S, L, T ] Cursor: Brass Chisel Point Archive - Rod Lovett Collection Tavernier-Gravet Chisel Cursor Mannheim ISRM 24.07.04.69.X  Tavernier-Gravet Chisel Cursor Mannheim- 1889-1898 Made in France - Rue Mayet 19, Paris Front Scale: 25cm // A [ B, C ] D  Back Scale (Slide): [S, L, T ] Back: Equivalents (French) Scan Courtesy of Tom Dilatush Collection    Tavernier-Gravet Chisel Cursor Mannheim Cellulous Laminate ISRM 24.07.04.48.X Tavernier-Gravet Chisel Cursor Mannheim Cellulous Laminate- c1900 Made in France - Rue Mayet 19, Paris Shows Medailles d' ord 18778 et 1889 (another medal was won in 1900) Front Scale: 25cm // A [ B, C ] D  Well: 26-51.5cm Back Scale (Slide): [S, L, T ] Back: Equivalents (French) Tom Dilatush Collection Tavernier-Gravet c1910 ISRM 14.09.25.03.X Tavernier-Gravet - c1910 Made in France - Rue Mayet 19, Paris Material: Pearwood Front Scale: 25cm // A, [ B, C ] D || 25cm  Well: 28-53.6cm Back Scale (Slide): [S, L, T ] Cursor: Cast Brass frame with glass lens with hairline Back: Equivalents in French Note: Has 48 π on end of stock and slide. These are either lot codes and/or maker marks. Original owner: H.M.J. scratched on cursor and on cardboard sleeve. Gift of Phillip Rodley, Upper Hutt, New Zealand Phillip Rodley Tavernier-Gravet Beghin Model Depose 10-3 REF Tavernier-Gravet Beghin Model Depose 10-3 Made in France Front Scale (unmarked) 27cm // A, DF [ CF, CI, C ] D, K || L Back Slider [ S, T, B ] Back: Equivalents and Conversion factors Note: Early riveted laminated wood stock, railroad track divisions, Metal framed multi-hairline glass cursor. Scan Courtesy of Giovanni Brenda Collection, Italy Tavernier-Gravet Beghin REF Tavernier-Gravet Beghin - c1920 Made in France - Rue Mayet 19, Paris Front Scale: 25cm // A, DF [ CF, CI, C ] D, K, L  Back Scale (Slide): [S, T, B ] Cursor: 3 hairlines Scan Courtesy of  Giovanni Breda Collection Tavernier-Gravet Mannheim REF Tavernier-Gravet Mannheim - dc8-28 (Aug 1928) Made in France - Rue Mayet 19, Paris Front Scale: 25cm // A [ B, C ] D  Back Scale (Slide): [S, L, T (inverted) ] Back: Equivalents (French) Scan Courtesy of Tom Dilatush Collection Tavernier-Gravet Plastic REF Tavernier-Gravet Plastic - c1950 Made in Paris, France  Front Scale (extended) 25cm // A [ B, CI, C ] D  Back Scale (Slide): [S, S&T, T ] Scan Courtesy of Tom Dilatush Collection Tavernier-Gravet Plastic Electro ISRM 24.07.04.44 Tavernier-Gravet Plastic Electro - c1950 Made in Paris, France. "62" on end of stock and slide. Aluminum framed cursor.  Front Scale (extended): 25cm // LL2, A [ B, CI, C ] D, LL3  Well Scales: DYNAMO-MOTEUR, VOLT# Back Scale (Slide): [S, S&T, T ] Tom Dilatush Collection Tavernier-Gravet Plastic REF Tavernier-Gravet Plastic - c1950 Made in Paris, France  Front Scale (extended) 25cm // A [ B, CI, C ] D  Back Scale (Slide): [S, S&T, T ] Scan Courtesy of  Rod Lovett Collection Tavernier-Gravet Beghin REF Tavernier-Gravet Beghin - dc 7-23(july 1923) Made in France - Rue Mayet 19, Paris Front Scale: 35cm // A, DF [ CF, CI, C ] D, K, L  Back Scale (Slide): [S, T, B ] Cursor: 3 hairlines Scan Courtesy of Tom Dilatush Collection Copyright © 2003-2025 International Slide Rule Museum