[M] A RARE LABORATORY WAVE FORM REFRACTOMETER...

A RARE LABORATORY WAVE FORM REFRACTOMETER PRISM BY C.D. AHRENS, CIRCA 1910
heavily constructed in lacquered and oxidised brass, signed to top AHRENS PATENT / LONDON, removable micrometer refraction collimator and plain lens, supported on a wooden base within original box of issue stencilled to top 'AHRENS'S PRISM' -- 8¾ x 10¾ x 8½in. (22 x 27.5 x 21.5cm.)

Provenance: University College London

C.D. Ahrens (1843-1918) was a brilliant optical prism maker between 1858 and 1916; in 1910 he, in partnership with the famous microscope maker Moritz Pillischer, took out Patent No.18997 /1910 for this instrument which is able to split light beams.

Condition Report
In excellent overall condition; some dust internally.

We are pleased to provide you with a general report of the condition of this property. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Charles Miller Ltd is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD “AS IS” IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE.