A good 19th-Century English lacquered-brass botanical microscope, signed on the stage Dollond, LONDON. , in a fitted mahogany carrying case -- 21cm. (8¼in.) wide See Colour Illustration The main limb is arranged to thread into the lid of the case. At the top is a short limb with a threaded aperture at the end for the objective lens. This is raised and lowered by means of rack and pinion, the extension tube fitting within the main limb. The stage slots into a small sleeve on the main limb and has a shaped ear for an accessory. Near the base of the limb is a slot for the concave substage mirror. There are five objectives: two with lieberkuhn; one with a large lens and a threaded brass cap; and one from another instrument. There is also the mounting for stage forceps, a sprung slider holder that fits into the stage, and a turned ivory canister for slide covers and retaining rings. The case has some blue plush-lining and a brass ferrule in the lid.
A good 19th-Century English lacquered-brass botanical microscope, signed on the stage Dollond, LONDON. , in a fitted mahogany carrying case -- 21cm. (8¼in.) wide See Colour Illustration The main limb is arranged to thread into the lid of the case. At the top is a short limb with a threaded aperture at the end for the objective lens. This is raised and lowered by means of rack and pinion, the extension tube fitting within the main limb. The stage slots into a small sleeve on the main limb and has a shaped ear for an accessory. Near the base of the limb is a slot for the concave substage mirror. There are five objectives: two with lieberkuhn; one with a large lens and a threaded brass cap; and one from another instrument. There is also the mounting for stage forceps, a sprung slider holder that fits into the stage, and a turned ivory canister for slide covers and retaining rings. The case has some blue plush-lining and a brass ferrule in the lid.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
