細節
Rules:
a two-fold two-foot rule by I.Aston, 85 Old Compton St., with wood scale, brass arch joint and iron tips; another, with brass tips, signed on the joint I.Roberts; another, by Rabone (cracked); a three-section mahogany and box parallel rule; an ivory thermometer slide-rule by Casartelli; a brass-mounted ebony spirit level; an ivory thermometer scale; and three bamboo rules (10)
a two-fold two-foot rule by I.Aston, 85 Old Compton St., with wood scale, brass arch joint and iron tips; another, with brass tips, signed on the joint I.Roberts; another, by Rabone (cracked); a three-section mahogany and box parallel rule; an ivory thermometer slide-rule by Casartelli; a brass-mounted ebony spirit level; an ivory thermometer scale; and three bamboo rules (10)