Lens Plate 2x magnification at focal distance of 10 inches. Fits OptiVISOR©.
The lens plate consists of two individual magnifying lenses prismatically ground from crown glass to control the index of refraction and to bring objects into focus as one image for both eyes.
Forensics Lab Supply Number 3540325.
Formerly Grau-Hall Corporation dba Grau-Hall Scientific.
Optical Microscoy Primer