細節
An Italian oxidised and lacquered-brass theodolite,
by Ing. A. Salmoiraghi, Milano, No. 5361, the telescope with rack and pinion focusing, prismatic eyepiece with shade, pin-hole backsight, the foresight cut into the tapering object glass mounting with lens cap, the axis incorporating cross-bubble located in twin supports with balance wheel, the vertical circle with silvered scale, twin verniers and magnifiers, graduated bubble-level, fine screw adjustment to both vertical limbs, the U-shaped vertical support raised on a tapering column fitted with twin vernier magnifiers for the enclosed horizontal scale with single viewing window, tangent screw fine adjustment and clamp, on three-screw tripod attachment, with two sets of foot pads, in fitted mahogany case -- 8½in. (47cm.) high
See Colour Plate
by Ing. A. Salmoiraghi, Milano, No. 5361, the telescope with rack and pinion focusing, prismatic eyepiece with shade, pin-hole backsight, the foresight cut into the tapering object glass mounting with lens cap, the axis incorporating cross-bubble located in twin supports with balance wheel, the vertical circle with silvered scale, twin verniers and magnifiers, graduated bubble-level, fine screw adjustment to both vertical limbs, the U-shaped vertical support raised on a tapering column fitted with twin vernier magnifiers for the enclosed horizontal scale with single viewing window, tangent screw fine adjustment and clamp, on three-screw tripod attachment, with two sets of foot pads, in fitted mahogany case -- 8½in. (47cm.) high
See Colour Plate