2606) Technical data Dimensions Dimensions75 x 100 mm Lens properties magnifiying glasses Lens Size100 x 75 mm Miscellaneous Properties (magnifying glasses) NotesVergrößerung ohne Zusatzlinse: 7,0 dpt;
same.PXM® lightweight lens for a distortion-free image.VariantsNameproduct codeMagnification Lens Size Notes Magnifying ruler, 200x25mm/ 1:1,826051:1,8 200 x 25 mm - With grip - Incl. red guide line Magnifying
glasses Lens geometryaplanaticLens materialPXM®Imaging propertiesdistortion-free illustrationLens Size90 x 50 mm Material and appearance (magnification glasses) MaterialABS,PE Miscellaneous Properties
2090) only suitable for use with item 2032.Technical data Lens properties magnifiying glasses Lens Size100 x 50 mm Miscellaneous Properties (magnifying glasses) NotesBest. Nr. Etui: 20211 Operating unit
Despite their differences in appearance, all these test symbols have one thing in common - their size is always five times the thickness of the line, and in the case of the Landolt ring, the gap width [...] person being tested has a visual acuity of only 0.5, then the test symbol displayed must be doubled in size in order for it to be recognised.
