signed Ross London 5167, with dual adjustment to the eyepieces, rack and pinion course focusing and fine focusing by lever and screw, rotating circular stage with sub-stage below, on tripod base, in mahogany case with recessed brass carrying handles and with three drawers of accessories including five oculars, live box, polariser, four objectives and bench condenser, 20in (51cm) high
signed Ross London 5167, with dual adjustment to the eyepieces, rack and pinion course focusing and fine focusing by lever and screw, rotating circular stage with sub-stage below, on tripod base, in mahogany case with recessed brass carrying handles and with three drawers of accessories including five oculars, live box, polariser, four objectives and bench condenser, 20in (51cm) high
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
