细节
A 19th-Century brass and burnished-steel contact goniometer,
signed on the base J.M. Ekling in Wien No. 14, with finely divided protractor scale, one quadrant hinged and secured with blued-steel clamp (slight surface rust), with clamping screw, the hinged arms arranged to slide, with clamp, contained in the original blue/green velvet-lined silver galloon bordered gilt-embossed leather-covered case with two gilt-brass hooks and eyes, the cover with paper label inscribed in ink Hand Goniometer -- 6.3/8in. (16.2cm.) wide
See Colour Illustration and Detail
signed on the base J.M. Ekling in Wien No. 14, with finely divided protractor scale, one quadrant hinged and secured with blued-steel clamp (slight surface rust), with clamping screw, the hinged arms arranged to slide, with clamp, contained in the original blue/green velvet-lined silver galloon bordered gilt-embossed leather-covered case with two gilt-brass hooks and eyes, the cover with paper label inscribed in ink Hand Goniometer -- 6.3/8in. (16.2cm.) wide
See Colour Illustration and Detail