Eyeglasses Horizontal Vertical Measure Construction Tool Multifunction Portable Optical Laboratory Accessory

Eyeglasses Horizontal Vertical Measure Construction Tool Multifunction Portable Optical Laboratory Accessory Description

Specifications:
When viewed from the side with scales, you can see a rubber in the hole. This is the hole which you will use.
Main hole scales:10 / 12.5 / 15 / 20 / 22.5 / 25
Second hole scales:17.5 (8.25&26.75 not frequently used, so they are not marked.)
Vertical height measurement of the frame;

Confirm the scale you want to use and find the corresponding hole position. Insert the thin of the marking pen into the hole from the side without the rubber .
Scale , the number shown represents the vertical height of the hole center (pen core) at this , and you can the scribe height by rolling this unit. (If you need to use 17.5, please insert the marking pen into the second hole)
Put the Frame and the a horizontal table, then do the scribe.
Color:
Material: aluminum alloy

Package Contents:
1 x Liner template scriber