细节
A flat mahogany accessories case
for a Powell & Lealand No. 3 stand, containing monocular and binocular bodies, Powell & Lealand substage with condenser and aperture wheel, Wenham and two other case prisms, polariser and analyser, four eyepieces, a Watson objective and two Browning objective canisters -- 13in. (33cm.) wide, 19th century
for a Powell & Lealand No. 3 stand, containing monocular and binocular bodies, Powell & Lealand substage with condenser and aperture wheel, Wenham and two other case prisms, polariser and analyser, four eyepieces, a Watson objective and two Browning objective canisters -- 13in. (33cm.) wide, 19th century