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A Lord's Cotton Cloth Coster cabinet model by ASTON & MANDER Maker 61 late 25 Old Compton St London, this rare complex calculator/slide rule measu...
An extremely rare desk model Lord's Calculator slide rule by ELLIOTT Bros London No 4 (the lowest production No. we are aware that still exists) I...
A fine and little used boxwood and brass plane table rule 17" x 14" (see The Rule Book p 126) in unusually nice condition (Jay Gaynor collection) ...
A comprehensive boxwood scale rule by HUGH REES Ltd Camberley and London scaled in Kilometres, Verst, Sajens, Ri (Japanese), Beri (Turkish) to Yar...
A boxwood scale rule by HEFFER Cambridge (Jay Gaynor collection) G+
A boxwood scale rule by ASTON & MANDER marked A 11 No 13987 Protractor 6" x 2" Exactly, Scale of Miles etc (Jay Gaynor collection) G++
The Gunter Reconnaissance Protractor a comprehensive boxwood scale rule by EDWR'D GUNTER with numerous scales for Principle Slopes, Diagonal of Ch...
An unusual boxwood protractor 4 1/2" x 1 3/4" with brass arm (Jay Gaynor collection) G++
A late 18c French two fold brass rule by MEURAND Quai de L'Horloge Paris with steel tips and decorative hinge, scaled to 12 French inches or, as e...
An early French brass sector by CANIVET Paris with Les Parties, Egales etc etc with decorative hinge G++
An early 19c French nickel mapping rule by J'ph RAYMOND a Montrond 7" x 2" with Decimetre Naturel , Metres etc G+
A pretty 4" brass protractor by LANGLOIS Paris Aux Galleries du Louvre G++
An early 6 1/2" French brass protractor with decorated bar and L'ing'r (engineer) Chevalier Opticiendu Roi Place du Pont Neuf 15 a Paris G++
An 18c brass 18" Gunter type rule with single bevel edge nicely engraved scales with Numb, Sin, Tan etc on reverse G
A most unusual 2' two fold 1/4" thick section boxwood and brass Coggeshall slide rule by PRESTON with two slides in boxwood and brass running side...
A very rare 24" two fold boxwood and brass Coggeshall slide rule (more than 1/4" thick section) engraved J.B. 1754 on the brass hinge and I.Burch ...
A little used 30" Captain Field's Improved parallel rule by DOLLAND London G++
A Pilot Balloon Slide Rule Mark 1 S12/41 by JAMES FARROW London with Cosine, Sine and Tangent Scales in fitted box, made for the Met. Office c1915...
An 18c brass thick section 24" double side boxwood Gunter slide rule with Sin, Tan, Lea, Cho, Num, S.R. V.S. etc minor stains G+
A 22" boxwood slide rule by W LANGLEY Maker Tooley St London with Inverted Line, Girt Line etc. some stains G
A rare, unusually designed 12" x 4 slide boxwood slide rule with brass pantograph hinge stamped BAINES Slide Rule No1 Patent No 25109/03 by C.T.CO...
A rare and important 24" boxwood Soho Slide Rule c 1800 by W & S JONES No 30 Holborn London (the original maker of the Soho) The rule has Soho sca...
A rare 32" timber merchants combination walking cane and timber measuring rule probably in yew wood dated W.W. 1705 with different tables on all f...
A most unusual 19c French boxwood 10cm combination rule, square and bevel with protractor hinge stamped E & A BREVETES Double Decimetre G++
An unusual boxwood double slide EWARTS Cattle Gauge with German silver cursor by T B WINTER Newcastle on Tyne 8 1/2" x 1 1/2" Adapted for any Mark...
A 2' three fold boxwood and brass calculating rule with LSD scales G
A rare 2' four fold boxwood and brass engineers rule by RABONE with brass slide, also with I Routledge Engineer G+
A slender 2' two fold boxwood and brass rule by SAMPSON Aston (illustrated Russell fig 201) minor stains G
An extremely rare 17/18c thick section 18" two fold boxwood mast makers rule with board measures and logarithmic scales (see Cat 30 lot 314 for si...
R.F.AGNEW'S 24" boxwood Slide Rule Patent 22165 with Ozs per Yard, Grammes Per Lineal Metre etc G+
A THOMLINSON'S Equivalent double slide, boxwood Paper Slide Rule 13" x 2 1/2" F
The CALLENDER-REID Cable Slide Rule Patent 7269/15 in boxwood and mahogany with Working Pressure Horse Power, Size of Cable, Volts etc 18" x 2 1/4...
A rare 60" six fold boxwood and brass gaugers dip rule by FARROW & JACKSON London for Rum, Marsala, Port, Wine and Beer and for various casks and ...
A pair of unused 2 fold and 3 fold 24" boxwood rules with brass tips, these are apparently Masonic rules, the 2 fold used to measure and lay off t...
A fine and little used boxwood and brass Harrow Mark Reducer by E.S.A.London 24" x 2 1/4" F
A 24" ebony and brass rolling parallel rule by J T LETCHER Truro G++
A pretty 19c French fully brass bound ebony rule with steel tips scaled in centimetres and 12 French inches F
A 2' four fold boxwood and brass dipping rule by BUSS Maker London with Bouge and Cylinder Bottles etc, minor stains G+(20-30)
An unusually fine and large boxwood and brass sector by W & S JONES London 12" x 3" closed F
A two fold boxwood and brass rule scaled to 24 Norway inches and 63 centimetres (illustrated Russell fig 208) F
A very little used brass pantograph by STANLEY London with ivory wheels and unusually with orig pencil lead box and instructions in orig fitted ma...
The Addometer by TAYLOR Chancery Lane London and the Addmaster Adding Machine both in orig boxes G++
A probably unused Standard ADDIATOR with stand, pen and instructions (in German) F
A fine mahogany FULLERS calculator by STANLEY London No 6399/31 c/w brass support attached to the orig mahogany box with instruction leaflet F
An early, little used FULLERS mahogany calculator by STANLEY London No. 5273/24 c/w orig brass bracket and instruction booklet in orig mahogany bo...
An early mahogany FULLERS calculator by STANLEY London No 2964/11 the removable handle stored in body of calculator with instructions in orig box G
A probably unused OTIS KING calculator No Z8088 with scales Nos 429 and 430 with instructions in orig box F
A model K OTIS KING calculator No W9412 with scales 414 and 423 with instructions in orig box F
A model K OTIS KING calculator No S3500 with scales 414 and 423 with instructions in orig box G++
An OTIS KING calculator No B4487 with scales 429 and 430 F
An OTIS KING calculator No N0214 with scales Nos 414 and 423 in orig leather pouch G+
A model K OTIS KING calculator No B6580 with scales 414 and 423 with instructions in orig box F
A model K OTIS KING calculator No X7372 with scales 414 and 423 with instruction in orig box, a little tight G++
An unusually small HALDEN Calculux circular slide rule 2 1/4" o/a with instructions in orig leather pouch G++
A small 2 1/4" HALDEN Calculex Patent Circular Slide Rule with instruction booklet in orig leather case G++
A most unusual and little used French 1 metre four fold square section ebony rule with German silver fittings also scaled in English and Amsterdam...
A Rotameter map measurer in Centimetres Made in Switzerland in leather cover (Jay Gaynor collection) G++
A double scale rule in ebony by ELLIOTT Bros Martins Lane London (Jay Gaynor collection) G++
A 6" German silver protractor with radius arm by STANLEY London in orig fitted mahogany box with trade label ex Max Ott collection G++
An engineers 8" adjustable level and plumb by RABONE No 1388 in orig box G++
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