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PARALLEL RULES ETC.
PARALLEL RULES ETC. Two ebonised & brass parallel rules, a clinometer rule by Stanley (compass missing), a triangular rule & a brass protractor. L...
SCALE RULES.
SCALE RULES. A scale rule by A. Edgell & Co., with offsets, in original A Edgell & Co., Set No. 1 box, dated 1915 & with broad arrow mark. Please...
ROLLING RULE ETC.
ROLLING RULE ETC. A rolling rule by W. H. Harling in boxwood & brass, with dividers in original fitted box. Also, a proportional compass by J. Hal...
RULE ETC.
RULE ETC. An Elliott scale rule & set square in original case (one rule missing). Also 22 numbered wooden railway curves & one plain piece in pitc...
SLIDE RULE.
SLIDE RULE. An American Midget slide rule by the Gilson Slide Rule Company, Michigan. In leather pouch & with original instruction booklet. Pleas...