拍品專文
See colour illustration on page 40
細節
A 19th century surveying level
A 19th century surveying level signed on the silvered compass dial B. Gerlach Varsovie, the telescope with rack and pinion focusing and red shade mounted on a curved limb from the horizontal circle and compass box, the needle with clamp, the compass with bubble level, the horizontal circle with varnish mounted on a pillar and tripod stand with makers trade label contained in the original travelling case -- 35.6cm. high
A 19th century surveying level signed on the silvered compass dial B. Gerlach Varsovie, the telescope with rack and pinion focusing and red shade mounted on a curved limb from the horizontal circle and compass box, the needle with clamp, the compass with bubble level, the horizontal circle with varnish mounted on a pillar and tripod stand with makers trade label contained in the original travelling case -- 35.6cm. high