Pellin’s Hematospectroscope D’Henocque.
On application
An Hematospectroscope D’Henocque, Analyseur Chromatique  by PH. Pellin, Paris. His business was in Paris as an optical instrument maker from the 1880. By the hematospectroscope there are two revolving discs with coloured glasses, numbered 0 – 3 – 10 – 11 – 12 – B (blue) and 0- 6 -7 -8 – 11 – B. There are also two original calibrated slide, ( 0 till 60 mm) , one from glass  with silver ends and the other from emaille. Both are marked with Hematoscope d’Henocque. Measurements box 18 x 15,5 x 10 cm