A 19th-Century lacquered-brass compound monocular microscope,
A 19th-Century lacquered-brass compound monocular microscope,

細節
A 19th-Century lacquered-brass compound monocular microscope,
by NACHET 17, rue St Séverin Paris, with sliding draw-tube and rack and pinion coarse focusing and micrometer fine adjustment, sliding mechanical stage, sub-stage condenser and plano-concave mirror, the tilting axis atop two slightly tapering brass columns to horseshoe-shaped foot with signature, with various accessories including three eyepieces, a cased set of six numbered objectives by NACHET, a prism attachment and other items, in the original fitted mahogany case with padded lid and carrying handles -- 15in. (38.1cm.) wide

See Illustration