HUGH POWELL/DOLLOND, London

细节

HUGH POWELL/DOLLOND, London
A lacquered-brass compound/simple microscope, with Huygenian eyepiece, rack-and-pinion focusing, the tapering body-tube screw-mounted to swivelling arm with collar for simple objective, the square, mechanical Turrell-pattern stage with micrometer divided 10-90 and engraved One turn of Micrometer 00 of an inch, the opposite side with additional micrometer divided 5-25 and engraved One turn of Micrometer ¼00 of an inch, the sub-stage with wheel-stops and plano/concave mirror on sliding collar, mounted by universal joint to telescopic pillar support on flat tripod stand, one foot signed Dollond, London -- 16½in.(40cm.)high, with three eyepieces, numbered 1-3, six objectives (five in cans), fish plate, vial holder, two stages, live box, tweezers and other items, all in fitted mahogany cabinet with Hugh Powell maker's label

拍品专文

Although signed by Dollond, this microscope is clearly the work of Hugh Powell. Before joining Peter Lealand in 1842, Powell was selling his own microscopes from 1840. Prior to that he produced microscopes for other makers, including Andrew Pritchard (see lot 293). He most probably made for Dollond as well. This example was proboably retailed by Dollond.

This example is slightly simpler than that which was sold in these rooms on 3 March 1994 (lot 353). These differences include the non-focusing body-tube and the simpler sub-stage.

A similar instrument with the Dollond signature is in the Billings Collection.