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Six folding boxwood & brass rules and two triangular rules G ...[more]
Two early boxwood and brass folding foot measures, a few chips G
20 boxwood and ivorine scale and calculating rules G
A rare double slide boxwood and brass HAM'S Ullage Rule with ivory scales to both sides, ex Whitbread museum (not seen one of these before!) G++
An 18" Capt.
An 18" Capt. Fields's boxwood parallel rule by ASTON & MANDER, a brass rule and boxwood square both by RABONE and an 18" rule G ...[more]
A fine and little used RABONE 1190 3' four fold boxwood and brass combination rule and level with
A fine and little used RABONE 1190 3' four fold boxwood and brass combination rule and level with protractor hinge F
An extremely rare and little used BURT'S Patent No 4359 timber slide rule No 135 consisting of a
An extremely rare and little used BURT'S Patent No 4359 timber slide rule No 135 consisting of a 24" boxwood and brass slide rule t/w a matching b...
A set of engine dividing boxwood rules by STANLEY London in orig fitted mahogany case, slight damage to one o/w F
A silvered brass Clinometer Field Mark 3 by The Cambridge Scientific Inst. No 4292 in orig fitted box G+
A rare 8 1/2" boxwood LORDS Cloth Costing Scale with sliding curser and clear instructions verso
A rare 8 1/2" boxwood LORDS Cloth Costing Scale with sliding curser and clear instructions verso G++
A quality 24" boxwood timber contraction rule with German silver tips F
A very rare 34" boxwood and brass sliding Gunter scale rule by W. & S. JONES Holborn London with double screw fine adjustment G+ ...[more]
A 24" boxwood slide rule by CASARTELLI Manchester with brass cursor (wire damaged) G
THOMLINSON'S Equivalent Paper Slide Scale boxwood and mahogany double slide rule 23" x 3 1/4" by J.
THOMLINSON'S Equivalent Paper Slide Scale boxwood and mahogany double slide rule 23" x 3 1/4" by J. THOMLINSON Partick Glasgow F
A large 12" two fold boxwood and brass sector by W S JONES Holborn London
A rare 24" boxwood land acreage calculator by W S JONES 30 Holborn London Roods, Chains and To The Inch with German silver cursor in orig pine box...
The Lord's desk top textile circular slide rule by ELLIOTT Bros London No 21 with 10" dial and 4
The Lord's desk top textile circular slide rule by ELLIOTT Bros London No 21 with 10" dial and 4 scales in wood case, two operated by handles on t...
A 12" four slide boxwood gauger's rule by EDW' ROBERTS Dove Court Old Jewry London G+
A rare 16" engineer's Estimating Slide Rule for metals by W F BROWN with Cost of Metal Bars, Plates,
A rare 16" engineer's Estimating Slide Rule for metals by W F BROWN with Cost of Metal Bars, Plates, Angles, Tubes & Discs with Cost Scale etc. et...
An unusually large 24 1/2" double slide boxwood proof rule by LOFTUS Maker London G++
An architects 2' two fold boxwood and brass slide rule with beveled edge by SLOPER & SON 1890-95
An architects 2' two fold boxwood and brass slide rule with beveled edge by SLOPER & SON 1890-95 and dated 1893 G ...[more]
Two 2' two fold boxwood and brass slide rules by PRESTON No 1167 and RABONE No 1246 G++
A 15 1/2" boxwood William's Proportional Plotting Scale by J H STEWARD Strand London Per Cent Scale,
A 15 1/2" boxwood William's Proportional Plotting Scale by J H STEWARD Strand London Per Cent Scale, Degrees of Slope and 1/2500 Chains with brass...
An 18 1/2" Callender-Reid Cable Slide Rule Pat No 7269/15 with Working Pressure, Horse Power,
An 18 1/2" Callender-Reid Cable Slide Rule Pat No 7269/15 with Working Pressure, Horse Power, Amperes, Volts Drop, Size of Cable etc. with instruc...
A rare 16" ships Engineer's Slide Rule by W F BROWN with Coal Consumption in Tons and Cwts of Ashes
A rare 16" ships Engineer's Slide Rule by W F BROWN with Coal Consumption in Tons and Cwts of Ashes Per 24 Hours, Indicated Horse Power, Pitch of ...
A 3 piece Marquois set by STANLEY London in orig fitted mahogany case F
A rare 48" boxwood and brass dip rule by BARTHES-ROBERTS London G+
Five different boxwood and brass caliper rules by SMALLWOOD (4) and RABONE F
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