细节
An aluminium-framed and cased anemometer,
by John Davis and Son Derby Ltd. No. 467, the silvered dial with three subsidiary dials, the handle with pawl, with six-blade impeller, the drum-shaped cover with brass strap mounts and clip -- 9in. (22.9cm.) long; and an unusual surveyor's Abney's-pattern surveying level, with aluminium fittings, the quadrant scale with magnifier, rack and pinion adjustment and bubble level, the telescope adjustable for focusing -- 8in. (20.3cm.) long
See Illustration (2)
by John Davis and Son Derby Ltd. No. 467, the silvered dial with three subsidiary dials, the handle with pawl, with six-blade impeller, the drum-shaped cover with brass strap mounts and clip -- 9in. (22.9cm.) long; and an unusual surveyor's Abney's-pattern surveying level, with aluminium fittings, the quadrant scale with magnifier, rack and pinion adjustment and bubble level, the telescope adjustable for focusing -- 8in. (20.3cm.) long
See Illustration (2)