StandardBiconvex loupes with black plastic frame for watchmakers. Good workmanship, with lenses Ø 25 mm - height 28 mm. Products nameVersionmagnificationstrengthitem No.watchmaker loupebiconvex2.5x4510607watchmaker loupebiconvex2.8x3 1/2510606watchmaker loupebiconvex3.3x3510605watchmaker loupebiconvex4.0x2 1/2510604watchmaker loupebiconvex5.0x2510603watchmaker loupebiconvex6.7x1 1/2510602watchmaker loupebiconvex12x510579watchmaker loupebiconvex15x510580