Line testers with bi-convex glass lens. Metal frame with silver-coloured finish Aluminium frame. Optimally produced hinges guarantee long service life. 

3407-SA3:

Magnification: 7x
Frame: metal
Field of view: 15 x 15 mm
Measuring length: 15 mm
Scale: 1 mm
Optics: Biconvex
Dimensions: 44 x 30 x 41 mm
Weight: 26 gram
Packaging: Cardboard box