on May 19, 2015
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CIRCA 1910
Affixed to the lower limb is a 65mm by 110mm rectangular dovetailed brass stage plate that has a central 30 mm aperture
Mounted atop the stage plate is a 72mm by 110mm rectangular mechanical stage
The condenser is a J. Swift & Son Parahom Achro Oil Immersion 1mm 1.35 NA Condenser
Also under the stage and attached to the base of the limb is a fixed cylindrical nickel plated brass bar that holds a moveable 50mm diameter brass mounted plano-concave mirror
The binocular head is equipped with a matched pair of 42mm 6x eyepieces
When the drawtubes on the binocular head are fully extended and the instrument stands vertically, it stands about 14.5 inches tall
In 1881 he could be found at 81 Tottenham Court Road, London W. C. where his business remained until after the turn of the Century
By the end of the 19th Century the firm was best known for their bacteriological, histological and petrological microscopes
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