Antique J B Dancer Brass Monocular Microscope C1850
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Antique J B Dancer Brass Monocular Microscope C1850:
Antique J B Dancer Brass Monocular Microscope C1850.
John Benjamin Dancer 1812-1887 was an inventor and maker of Philosophical , Optical and Nautical instruments who had apprenticeship's with Ramsden , Dollond and Troughton.
This monocular microscope was Dancers " Large best microscope ", the trade label reads 48 Cross st which would date the instrument to C1850. It is signed in script " J B Dancer OPTCIAN Manchester".
The monocular body tube is mounted on a rack and pinion to focus the instrument , fine focus is achieved via the small knob to the right of the objective. The stage is the early type (non mechanical) . Below the stage is a condenser and a Plano concave mirror which can be moved up & down the circular column. The microscope also features a draw tube which is numbered 10-100. It sits on two slender pillars which support the limb on trunions.
The originalmahogany eight draw box has a working key and a brass carrying handle and houses many accessories including bullseye condenser, two eye pieces , two RMS objectives and one achromatic lens , camera lucida lens , live box , forceps , glass slide and 27 slides with specimens.
The microscope and box weighs over 10kg and fully extended measure's 47cm . It is in excellent cosmetic and mechanical condition . Only one side of the mirror needs replacing and one of the small knobs on one of the mahogany draws is missing.
This elegant early Victorian microscope should appeal to the connoisseur collector of high quality scientific instrument'sOn 30-May-13 at 08:57:40 BST, seller added the following information:
New picture shows sub stage and condenser, plus objectives thanks for your questions