Dr. Bailliart Ophthalmo-dynamometer.

A French second quarter 20th century Dr. Bailliart Ophthalmodynamometer in original case. It is finely made of Aluminium and 16  cm overall, with spring-loaded piston advancing a long screw against conical gearing to drive the pointer around the circulair scale graduated every 5 grams from 0 to 160 gr. A second pointer is pushed along by the first, to register the maximum pressure. The scale is marked with: “Ophthalmo Dynamométre Du Dr Bailliart, Paris Defose”. Condition is excellent complete with the plush-lined carrying case. Measuremnets case 17,5 x 6,5 x 3 cm.