Bright field stage micrometer has 1" to 0.002 inch diameter circles provide calibration for various microscope magnifications.
Dual scale. Both metric and inch scale on same slide.
Metric: Diameter: 100 micrometer, 150 micrometer, 200 micrometer, 250 micrometer.
Inch: Diameter: 1" inch ,0.25 inch,0.125inch,0.062inch,0.035 inch,0.02 inch,0.01 inch,
Ideal for stereo microscopes, stage measurements and light microscope calibration.