Antique Brass Microscope by J. Antique W. Watson and sons Microscope. Circa ‘s. We just located 2 original objective lenses and accessories. Fine example of a mid 19th Century brass microscope in its fitted wooden case, complete with eyepiece lenses, and 2 original objective lenses and extra accessories in brass cases, mostly original accessories.
Antique’Bactil’ binocular microscope by Watson of London, 1940s
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Microscope ‘Service’, W. Watson & Sons England, London, circa , blackened brass u. zaponiert, height 33 cm signed at the tube ‘SERVICE / W. Watson.
This is a fine example of an English Monocular Microscope, made by W. It has a Serial Number , dating to C With accessories including objective lenses, Bullseye, eyepiece and a Mahogany Case. Fine focus by a calibrated brass thumb wheel to the rear. The plain, black finished brass stage has simple slide clips, and would not have had a mechanical stage until later models.
There is a triple nosepiece with 3 Objective lenses. It has a hand operated, working Iris, and a general purpose removable condenser. The working microscope apparatus has a hinged brass attachment to the tripod, for angled adjustment. The condition of the lacquered brass finish is now to a pleasant, honey coloured patina of age, and is virtually intact, with only very minor areas of wear. This is neatly fitted to the case interior, when not in use.
There are one or two minor shrinkage cracks to the rear of the case. There is an original leather carrying handle. I have been interested in scientific instruments since my grammar school days in the s then university at Guys Hospital, London, where I qualified in , and then working as a Dental Surgeon, until retirement from that profession, in
The serial number would date it to circa The plano-concave mirror is excellent with no age wear on either side. Coarse focus is rack and pinion on the column, and micrometer fine focus on the rear of the pillar. It has a lateral movement circular mechanical stage with a rotating slide holder that allows complete flexibility in positioning the slide. The condenser holder is rack and pinion height adjustable, and has two knobs for positioning and centering the condenser.
Swinging substage, circular stage. , Unknown Model name, -, Watson & Sons patent. Appears in Practical Microscopy by George E. Davis (p).
Watson and Son was an optical instrument maker. In , the William Watson business was established in London for the manufacture of optical instruments. By the s, the company moved into lanterns, slides and associated equipment. In , the name was changed to W. In the s, the company added photographic equipment and became known as a leading manufacturer of the Highest Class Photographic Instruments and Apparatus in England. Into the s, the company remained at High Holborn , London, England.
On 9 January William Watson died. In , the name of the company was changed to W. In the s, the business continued to grow and advertised in catalogues their factories for instruments, optical glass and cabinet work located at Fullwood Rents W. The warehouse and show room remained at High Holborn. In , W. The company also offered Finsen -type lamps.
Watson W and Sons, Used
Condition Cosmetically: The lacquered brass is stained from age and use. The substage mirror is in good condition with minimal stains. Optically: The lenses are clear and functional. Mechanically: The hinges are stiff and need some force to move.
Sons Limited London Porter and iron base this box, a tightlywound flattened grid. asiuk. watson microscope dating org On this massive French Horizontal.
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A late 19th Century English Cased Monocular Microscope, By & Sons, London, Model…ON HOLD
Microscopy (Wellcome). Explore many fine examples of microscope technology from around the globe, dating from the late 17th century up to the s.
Published by HMSO Seller Rating:. Disbound loose sheets with clear protective covers. Original specification for patent application together with drawings. Seller Inventory More information about this seller Contact this seller 1. Published by Sydney, W.
History of the Cell: Discovering the Cell
Magnifications are approximate and generally rounded to nearest whole number with few exceptions. Items in red are objectives in the collection at this time. Some of these, like the Watson Apochromatics began to be made a little later than the production date of the Grand Van Heurck in this collection. At the time that stand was made, the standard mechanical tube length for Watson objectives was mm about 8 inches.
Robert Hook refined the design of the compound microscope around such as James Watson and Francis Crick’s studies on the structure of.
Condition Cosmetically: The instrument still has its original lacquer with isolated tarnishing on the brass and some scratches. Optically: The lenses are clear and functional. Mechanically: The microscope is functional. Description The compound microscope stands on a tripod base, which is similar to the design used in W. Watson’s more expensive instruments. The tripod ends in two uprights connected to the trunnion joint with adjustments that were similar to many other Watson models such as the Edinburgh and Royal.