The SM-13LH Vernier Micrometer is a left-handed version of the SM-13. Compared to a standard micrometer, the spindle on a left-handed micrometer travels in the opposite direction during operation. For example, the spindle on the SM-13LH will retract when the knob is rotated clockwise. The SM-13LH can be used on stages where the micrometer mounting is on the moving (top) platform of the stage (such as 460A or 460P series stages) so that turning the micrometer's knob moves the stage in the direction of the micrometer travel (just like a standard micrometer mounted to the fixed platform of a stage does). The SM-13LH has a 13 mm travel range and a 9 lb load capacity. SM Series micrometers have 0.5 mm pitch (50.8 TPI) threads and read directly in increments of 10 µm, with vernier reading of 1 µm.
The Vernier scale allows measurement in between two of the increments on the main scale and therefore lets the user measure more precisely than what could be done by rough estimation. These micrometers have 0.5 mm pitch (50.8 TPI) threads and read directly in increments of 10 µm, with vernier reading of 1 µm.
The SM-13LH is a left-handed version of the SM-13. Compared to a standard micrometer, the spindle on a left-handed micrometer travels in the opposite direction during operation. For example, the spindle on the SM-13LH will retract when the knob is rotated clockwise. This left-handed micrometer is made to be used on stages where the micrometer mounting is on the moving (top) platform of the stage.
All SM series micrometers have the same 9.5-mm mounting interface making them both interchangeable with other micrometers and compatible with the Newport stages listed below.
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