12 1/2" BOXWOOD 2-SLIDE PROOFING SLIDE RULE by J. LONG
Add-1382. England, 4th quarter 19th century, signed on an edge "J. LONG MAKER, 43 EASTCHEAP LONDON." This 12 1/2" boxwood 2-slide proofing slide rule with brass endpieces is in very good overall condition, with no chips, scratches or stains.
