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19th century brass microscope by Crouch

A fine example of a 19th century brass compound microscope by Crouch. It is signed on the base " Henry Crouch, London, 9108" and stands 10 " tall in closed position. It is also signed: "S Maw Son & Thompson, Agents" on the stage. The serial number would date it to circa 1898. The 6" optical tube extends to 9 " giving the instrument a maximum opening height of 16 ". A double nosepiece has two Crouch objectives of 2/3" and 1/6", each in matching brass canister signed "Henry Crouch, London", and "S Maw Son & Thompson" on the lid. A condenser with variable diaphragm is attached beneath the stage. A separate small iris stop fits into the condenser to reduce the opening to a finer point. The entire optical system is in excellent condition, as is the plano-concave mirror. Coarse focus is rack and pinion; fine focus is by means of a micrometer knob atop the limb. All controls function smoothly. The instrument is finished in lacquered brass and a black base. Coverage is 100% with very little age spotting. The microscope is housed in its original hand-dovetailed mahogany case with brass handle. This is a handsome functioning microscope with an excellent lacquered brass finish.

Item 1091

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