Details
A rare late 19th-Century Photo-Theodolite,
signed C.F. CASELLA & Co LTD., 11, 13, 15 ROCHESTER ROW LONDON S.W., the oxidised and lacquered-brass telescope with rack and pinion focusing, lens hood, dust slide, cross-wire adjusters and graduated bubble level, the axis with quadrant raised on two inverted V-supports with tangent-screw fine adjustment and silvered vernier scale, mounted on 'marbled' finished aluminium casing with lens mechanism, frosted-glass door opening to reveal the interior containing the 'Out'/'In' adjustable compass mechanism and photo double-dark slide location with cross-wires and clamps for celluloid recording slides, the oxidised and lacquered-brass horizontal circle with finely engraved chamfered scale with silvered vernier tangent-screw fine adjustment and clamp, on three adjustable screw feet, with five mahogany double-dark slides, a plummet and other accessories, in fitted mahogany case -- 23in. (58.4cm.) wide
See Colour Illustration and Detail
signed C.F. CASELLA & Co LTD., 11, 13, 15 ROCHESTER ROW LONDON S.W., the oxidised and lacquered-brass telescope with rack and pinion focusing, lens hood, dust slide, cross-wire adjusters and graduated bubble level, the axis with quadrant raised on two inverted V-supports with tangent-screw fine adjustment and silvered vernier scale, mounted on 'marbled' finished aluminium casing with lens mechanism, frosted-glass door opening to reveal the interior containing the 'Out'/'In' adjustable compass mechanism and photo double-dark slide location with cross-wires and clamps for celluloid recording slides, the oxidised and lacquered-brass horizontal circle with finely engraved chamfered scale with silvered vernier tangent-screw fine adjustment and clamp, on three adjustable screw feet, with five mahogany double-dark slides, a plummet and other accessories, in fitted mahogany case -- 23in. (58.4cm.) wide
See Colour Illustration and Detail