Ross Zentmayer brass microscope (1885)

Ross Zentmayer brass microscope (1885)

Stock Number: 1832


Offered for sale is a heavy, large, compound, monocular microscope by Ross, London. Ross-Zentmeyer pattern





Country of manufacture

UK and Ireland

Categories: Scientific, Microscopy


Offered for sale is a heavy, large, compound, monocular microscope by Ross, London. Ross-Zentmayer pattern, horseshoe shaped base, stamped “Ross London, 5356”, twin supports, and stage. The serial number places it in 1885. 

The supra structure consists of a brass support column, with a course focus rack system, controlled by 2 milled wheels, and a rear mounted graduated wheel for fine focus. The main body racks to a maximum height of 60 cm, and closed to 43 cm. The name of the model defines a set of microscopes characterized by allowing an oblique illumination of the item to be analyzed. This type of design was widespread in the US from 1870 and this one in particular is surely the most famous. 

Contained in a, probably not original, mahogany case, in very good condition with a working lock and key. It comes with two original Ross objectives (1in and 1/5in) in their original brass cannisters, as well as two empty ones. Rotating mechanical stage with X-Y movement (X manual and Y by pinion) and substage with diaphragma iris, condenser and filter holder with micrometric adjustment.

Very heavy microscope, unpacked it weights more than 8.5 kg. See a similar one in this wonderful website:

Shipping to Europe is 45€ and 80€ worldwide

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ES Viafora

Based in Barcelona, Spain, Viafora specialises in antique scientific instruments, especially microscopes. Selling on eBay as 080bcn since 2003, Viafora has a record of excellent customer service.

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