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Two boxwood and brass proportionate waist measures by RABONE and A & M G+ ...[more]
A 24" boxwood computing scale with German silver fittings by C.BAKER and a 24" scale rule by
A 24" boxwood computing scale with German silver fittings by C.BAKER and a 24" scale rule by HALL & HARDING G+ ...[more]
A patternmaker's boxwood and brass shrinkage rule by CHISLET London marked Moses Bevan (one brass
A patternmaker's boxwood and brass shrinkage rule by CHISLET London marked Moses Bevan (one brass hinge broken) and a late 17c rent rule (lacks sl...
Three parallel rules in ebony and ivory t/w a 6" ivory sector and two scale rules G+
Two 2' two fold boxwood rules with brass slides and two others for restoration G-
A most unusual 16" boxwood slide rule with brass fittings to reversible slide for sending coded
A most unusual 16" boxwood slide rule with brass fittings to reversible slide for sending coded messages G++
A most unusual 18 1/2" domed brass rule by J SEARCH London (1771-81) calibrated on both edges and
A most unusual 18 1/2" domed brass rule by J SEARCH London (1771-81) calibrated on both edges and numbered at each 1/3" division, this is the rule...
A rare 12" boxwood and brass calculating slide rule with cursor by E.PRESTON for Diameters of Yarn
A rare 12" boxwood and brass calculating slide rule with cursor by E.PRESTON for Diameters of Yarn and Square Root, Compiled by JAMES HOLMES M.S.A...
A rare boxwood and brass Gamages' "Thalea" (a mash of the rivers Thames and Lea) Fish Measure by
A rare boxwood and brass Gamages' "Thalea" (a mash of the rivers Thames and Lea) Fish Measure by PRESTON, similar to their foot measure but marked...
A most unusual 24" x 2" x 1/2" double slide, thick section, boxwood logarithmic rule marked Weight
A most unusual 24" x 2" x 1/2" double slide, thick section, boxwood logarithmic rule marked Weight in Cwts, Thickness in decimals of an Inch etc t...
An unusual 12" boxwood Lactometer slide rule by BAIRD & TATLOCK London with Richmond's Improved Milk
An unusual 12" boxwood Lactometer slide rule by BAIRD & TATLOCK London with Richmond's Improved Milk Scale T=.25 G+1.2 F+.14 Specific Gravity, Tot...
An unusual 24" boxwood and brass logarithmic slide rule with Girt Line, Diameter, Inverted Line
An unusual 24" boxwood and brass logarithmic slide rule with Girt Line, Diameter, Inverted Line etc minor losses to each end of slide G
A very rare 11" double slide boxwood calculating rule by TAVERNIER-GRAVET Paris with celluloid
A very rare 11" double slide boxwood calculating rule by TAVERNIER-GRAVET Paris with celluloid scales and cursor in orig canvas sleeve, chip to on...
A little used 12" x 2 1/2" boxwood slide rule with The "Vade Mecum Slide Rule" Designed Expressly
A little used 12" x 2 1/2" boxwood slide rule with The "Vade Mecum Slide Rule" Designed Expressly for the Timber Trade by George Bousfield Grimsby...
A rare 11" mahogany alcohol fermentation slide rule with celluloid scales by J.LONG London F
A rare 11" mahogany alcohol fermentation slide rule with celluloid scales by J.LONG London F
A very rare LLOYDS Plan 2' two fold boxwood and brass engineer's rule by W.H.BROWN Birmingham G
A very rare LLOYDS Plan 2' two fold boxwood and brass engineer's rule by W.H.BROWN Birmingham G
A two fold boxwood and brass clinometer rule by TROUGHTON & SIMMS London marked Centigrade, Fahrenheit and Reaumer with pendulum style pointer G+ ...
An early 13" brass scale rule by TROUGHTON London with bevelled edge, minor stains G+
An unusual 15 1/2" celluloid on mahogany double slide Gas Heating and Value calculating rule by U.
An unusual 15 1/2" celluloid on mahogany double slide Gas Heating and Value calculating rule by U.G.I.United Engineers Phila. USA 1932 in orig box...
An early double slide boxwood 24" gauger's rule by THOMAS COOKE marked T.C. between fleurs-de-lys (w
An early double slide boxwood 24" gauger's rule by THOMAS COOKE marked T.C. between fleurs-de-lys (w 1708-44) a very rare early rule (see Cat 35 L...
A 7" boxwood and brass Freeman's Refractionists Rule by RAPHAEL'S London with brass fittings and
A 7" boxwood and brass Freeman's Refractionists Rule by RAPHAEL'S London with brass fittings and another optometrist's boxwood rule G+
An engineer's 2' four fold ivory rule by RABONE with German silver slide and fittings and Routledge Engineer's scales, one hinge requires attentio...
A rare 12" four fold ivory rule by HARRILD London with German silver fittings G
An early 9" ivory sector with brass hinge, a size not often seen G
An unusual 12" boxwood single slide rule with two brass cursors, purpose unknown, poor repair to
An unusual 12" boxwood single slide rule with two brass cursors, purpose unknown, poor repair to slide G
A carpenter's 2' three fold boxwood rule by I. ASTON Maker London with ivory slide and note pad G++
A carpenter's 2' three fold boxwood rule by I. ASTON Maker London with ivory slide and note pad G++
A carpenter's 2' three fold boxwood rule by DRING & FAGE London with German silver fittings and
A carpenter's 2' three fold boxwood rule by DRING & FAGE London with German silver fittings and ivory slide and note pad G++ ...[more]
A 26" x 2 1/2" double slide boxwood calculating rule with J.H.YOUNG'S Patent No 100 with Parts of
A 26" x 2 1/2" double slide boxwood calculating rule with J.H.YOUNG'S Patent No 100 with Parts of Cubic Feet or Pence or Shillings, Per Cubic Feet...
A 12" four slide boxwood gauger's rule by COOK Maker to the Excise G+
A 20" two fold boxwood and brass dip rule by DRING & FAGE with Imp'l Gallons G+ ...[more]
A 24" four fold boxwood and brass dip rule by LUMLEY Makers, America Square, London G++
A 15 1/2" two fold boxwood printer's rule by WALKER Durham G+
A most unusual 24" single slide boxwood Soho type rule with numerous interesting tables relating
A most unusual 24" single slide boxwood Soho type rule with numerous interesting tables relating to steam ships with Pump'g Engines, Screw, Knots,...
An unusual 23" double slide boxwood THOMLINSON'S Equivalent Paper Slide Scale on pine base with
An unusual 23" double slide boxwood THOMLINSON'S Equivalent Paper Slide Scale on pine base with Superficial Area in Inches etc etc and Arranged by...
A 36" brass faced boxwood straight edge G-
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