This metal trial frame is new updated product. It adopts the classical design, and durable metal knobs and components. It can accommodate up to four pairs of trial lenses and has independent adjustments for PD, temple length and angle, height, and cylinder axis.
Features:
The distance of cornea vertex to test lens can be measured by vertex distance scale
The single stationary rear cell and three front cells allow the frame to accommodate a total of four 38mm trial lens
Temple length and angle can be smoothly adjusted
Durable special light-weight material