Horne Thornthwaite & Wood 123 Newgate Street London
Early achromatic monocular microscope
c.1848
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A Horne, Thornthwaite & Wood advertisement from 1845.
The main focus utilized with this microscope operates on the stage by rack and pinion. The tube remains stationary and has a fine adjustment operated by the milled knob attached to the tube which moves the nosepiece. Another microscope by the same makers with a similar focusing arrangement can be found elsewhere on this website.