Stage micrometers, SM-12

The SM-12 micrometer is useful in microscopes and other optical magnification systems for magnification calibration.

Glass Size	25mm x 75mm. ≥1.4mm thickness
Scale Length	0.08 inch (English) X-axis only 2.0 mm (Metric) X-axis only
Divisions	English = 0.001"; Metric = 25µm (0.025 mm) No numerical scale labeling
Flatness	≤ 10 µm/100 mm
Image Forming Material	Chrome
Image Contrast/Density	Chrome transmission density is ≥ 2.0
Feature Size Accuracy	2 µm
Image Placement Accuracy	0.001 mm/100 mm
Polarity	Scales are opaque on a clear background
Reading Direction	Right Read Chrome Up (RRCU)

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