MICROMETER GRATICULE PKT 10

Prepared by photographing a master graticule on to a 35mm film, at a reduction to give an image 10mm long, numbered at 1mm intervals, with 0.1mm subdivisions. These scales can be cut out to fit most eyepieces. The scale can also be mounted between a slide and coverslip to produce a stage micrometer. With full instructions for cutting and mounting the scales.