Bausch and Lomb 70 Vertometer
AMERICA North (USA-Canada-Mexico)
An important part of each handling of an ophthalmic lens, from manufacture to final inspection of the finished spectacle, is the measurement of the lens power. Standard instrument for this purpose in the factory, laboratory, and professional office is the Vertometer. Properly used, the Vertometer will measure the spherical, cylindrical, prism powers of a lens, locate cylinder axis, and prism base-apex line. With the built-in marking device it provides an efficient and precise means of marking lenses for cutting and edging. With the built-in adjustable lense table, finished glasses can be measured for adherence to Rx, for vertical prism differences, either wanted or unwanted, and for segment height.