Everyone who has anything to do with the prescription of eyeglasses has heard of OCULUS Universal Trial Frames.
OCULUS UNIVERSAL TRIAL FRAME UB3
– Universal Trial Frame, black, lightweight metal/plastic, for 5 pairs of lenses
– Independent right/left adjustment of the PD from 48–80 mm, adjustable bridge height and offset
– CVD measurement, adjustable temple length and tilt
– Low-set hinges allow the lenses to be inserted into the rear holders from the side
– Lens ø 38 mm
– The Hegener rotary polarizer is mounted directly to the universal trial frame.