Details
A brass range-finder,
by Troughton & Simms, the telescope with rack and pinion focusing, lens cap, mounted on twin Y-frames, the upper supports incorporating fore and aft sights, mounted with a bubble level on the horizontal bar limb, with roller and sliding fine adjustment for elevation, with rack and pinion motion, tangent-screw fine adjustment, with pointer set to read against a horizontal range scale inscribed 1500-12000, the vertical support with finely divided scale engraved on a drum, with horizontal adjustment and pointer, the massive cast brass base with micrometer adjustment for azimuth motion, mounted with a level and cross bubble, the horizontal circle engraved on the lower mounting, with adjusting handle over the micrometer screw box engraved DEPRESSION RANGE FINDER W. OTTWAY AND CO LIMITED EALING LONDON, on three adjustable screw feet -- 22in. (56cm.) wide overall
See Colour Illustration
by Troughton & Simms, the telescope with rack and pinion focusing, lens cap, mounted on twin Y-frames, the upper supports incorporating fore and aft sights, mounted with a bubble level on the horizontal bar limb, with roller and sliding fine adjustment for elevation, with rack and pinion motion, tangent-screw fine adjustment, with pointer set to read against a horizontal range scale inscribed 1500-12000, the vertical support with finely divided scale engraved on a drum, with horizontal adjustment and pointer, the massive cast brass base with micrometer adjustment for azimuth motion, mounted with a level and cross bubble, the horizontal circle engraved on the lower mounting, with adjusting handle over the micrometer screw box engraved DEPRESSION RANGE FINDER W. OTTWAY AND CO LIMITED EALING LONDON, on three adjustable screw feet -- 22in. (56cm.) wide overall
See Colour Illustration