France and Belgium
Slide Rule Gallery

This gallery is dedicated to Belgium and French slide rules and manufacturers. (Manufacturers not found in their own gallery)

KEEP ISRM FREE!
Donations are
tax deductable

Manufacturers/Brands Represented in this gallery:
Appoullot, Arnault & Paineau, Besse, Charpentier, Lenoir, Lenoir-Gravet, Logarecta, MARC - UNIS French Standard Slide Rules, Maurice Damien, 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.

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..

Arnault & Paineau

Arnault & Paineau Circular Slide Rule

Arnault & Paineau Circular Slide Rule
Made in France by Arnault & Paineau
Materials:Aluminum substrate and disk, Celluloid cursor, brass knobs, wood backing and frame.
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.
Archive - Nathan Zeldes Collection, Jeruselum, Israel

With wooden frame, a possible display add-on

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)

also see Tavernier-Gravet (successor to Gravet-Lenoir) (1867-1972)

REF Lenoir SOHO c1825 26cm	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
REF Gravet-Lenoir SOHO 1829-1844 25cm	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 Adders gallery.


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

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
Advertisement courtesy of regladecalculo.com

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 REF	Tavernier-Gravet Chisel Cursor Mannheim- c1900 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 c1910 ISRM 14.09.25.03	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. scrathed 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 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

France and Belgium Slide Rule Gallery