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Large Brass microscope by Baker – circa 1860

Stately and imposing, standing 17 " high when closed, this instrument is signed: "Baker, 244 High Holborn, London" on the base. It is similar to – but larger than – the Baker microscope found in Billings as item number 410.   See the photo above for a sense of scale in comparison to a standard microscope.   The instrument is mentioned in Hogg’s book, "The Microscope" (1867 edition), where it is identified as Baker’s Number 2 compound microscope. Coarse focus is rack and pinion on the bar limb. Fine focus is controlled with a knob connected to the rear if the objective tube. The mechanical stage has full lateral movement along with a slide holder capable of circular motion. All rack work is in excellent operating condition. Two sub stage condensers screw into a condenser plate that clips onto the sub stage assembly. One condenser is optical with a variable iris diaphragm. The other is a wheel of stops. The large (3") plano-concave mirror is in very good, usable condition with some age veining on the plane side and age spotting on the concave side. Three original Baker objectives (4", 2", and 1") with matching, signed brass canisters, and two eyepieces make up the optical system. The 4" and 2" lenses have the Society thread, while the 1" lens has the older, inner Ross-type thread and attaches with an adapter that is included. The microscope is finished in its original lacquer, which is nearly complete with normal age wear showing throughout. The lens tube detaches for compact storage of the microscope into its original hand-dovetailed mahogany case with folding brass handle. An accessory drawer in the case has space for most of the accessories and slots to hold 12 slides. Additional accessories include a compressorium and live box. This is a very fine, impressive instrument from a renowned London maker. It is in excellent operational condition and makes a large, commanding display.

Item 1103

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