Microscope Micrometer Calibrator Ruler High Precision Film Point Gauge Ruler
The size of the whole film is :76mmx25.4mmx0.1mm(thick), the total length of the engraving line is 50mm, a total of 500 small grid, each small grid value is 0.1 mm. Line width: 0.01-0.2mm. Thickness: 0.1mm.