.jpg?w=1)
細節
A black-enamelled and lacquered-brass military-pattern director theodolite,
unsigned, the telescope with fore and aft folding sights, bubble level, vertical fine adjustment, with rubber eyepiece and spare sighting tube, with quadrant for depression and elevation, graduated 50°-0-50°, with tangent-screw micrometer fine adjustment, the horizontal circle incorporating a variation trough compass, the edge-bar needle with jewelled cap, with micrometer fine adjustment, in fitted mahogany case -- 17.5/8in. (44.7cm.) wide, with the associated aluminium, mahogany and brass-mounted tripod
See Colour Illustration
unsigned, the telescope with fore and aft folding sights, bubble level, vertical fine adjustment, with rubber eyepiece and spare sighting tube, with quadrant for depression and elevation, graduated 50°-0-50°, with tangent-screw micrometer fine adjustment, the horizontal circle incorporating a variation trough compass, the edge-bar needle with jewelled cap, with micrometer fine adjustment, in fitted mahogany case -- 17.5/8in. (44.7cm.) wide, with the associated aluminium, mahogany and brass-mounted tripod
See Colour Illustration