Yoked Prism Frames with Adjustable Temple
Yoked Prism Frames with adjustable temple are available in 2 lens sizes: 38 mm for Pediatrics and 48 mm for adults. Comes with comfortable and adjustable nose piece. Comes with large thumb screw on each side so that each prism can be secured.
A 360° compass or protractor which helps to accurately position the prism base.