PetitpierreBiconvex loupes from Petitpierre made of elastic plastic for best wearing comfort. With screwed lens and air slots against fogging. Productswatchmaker loupe nameversionmagnificationstrengthcolouritem No.watchmaker loupebiconvex2.5x4white510625watchmaker loupe nameversionmagnificationstrengthcolouritem No.watchmaker loupebiconvex2.5x4black510626watchmaker loupe nameversionmagnificationstrengthcolouritem No.watchmaker loupebiconvex2.5x4orange510627watchmaker loupe nameversionmagnificationstrengthcolouritem No.watchmaker loupebiconvex2.5x4lavender510628watchmaker loupe nameversionmagnificationstrengthcolouritem No.watchmaker loupebiconvex2.5x4Fuchsia510629