The flip-up hinge tension can be adjusted. The vertical adjustment hinge should be secured after setting up the loupes.?

?
?Specifications:

?Magnification????????????????????????? 3.5X

?Working distance*???????????????? 340mm (290-390 mm)

?Depth of field????????????????????????? 50mm

?Field of view?????????????????????????? 55mm

?Weight?????????????????????????????????? 52 gr

?*The loupes will provide a sharp image at the Working distance +/- the Depth of field.