Description

A fine and rare museum quality Duboscq/Pellin colorimeter c.1885 with unusual features only seen in this example. Although the basic design did not change for 50 years, I believe this is one of the earliest collaborations of these Paris instrument makers. Early signature on the backing plate “Mr. Jules Duboscq, Ph. Pellin, Paris”, it stands 17 inches tall and is mounted on a mahogany base (8 x 5 inches) with drawer and rounded drawer pull. Draw tube eyepiece focusing to the prism head, independent rack and pinion distance scale in millimetres (for the sample buckets), dark green and  blue glass light filters, OCTAGONAL plungers,  round glass sample vials for comparative viewing, and a rectangular mirror angled by knurled knob. In the 1913 Pellin catalogue the design is similar although the base is metal, the plungers are solid, round glass and the sample vials are cup-shaped. There was also an optional micrometer eyepiece to measure the comparative sample light wavelengths. The construction is of anodized and bright brass (70% lacquer remaining with spotting and minor scratches). A very early example in untouched cosmetic condition. Mounting screws on the sides for a shield/cover. The only example extant on a mahogany base.

Jules Duboscq (1817-1886) apprenticed to Soleil and formed a partnership with Philibert Francois Pellin (1847-1923) in 1885.