Mitutoyo 150-208 Mechanical Micrometer Head 1 Inch

Product Description

The MITUTOYO 150-208 is a mechanical micrometer head designed for precise linear measurement in machining, inspection, and instrumentation applications. It delivers a measurement range of 0 to 1 inch with an accuracy of 0.0001 inch, making it suitable for high-tolerance work where repeatable positioning is critical. The head features a ratchet stop thimble with a 0.7087 inch (18 mm) diameter, a flat rotating spindle with a carbide-tipped measuring face, and a chrome-plated finish for corrosion resistance. Licensed metrology technicians, machinists, and quality control professionals typically install and use this type of head in precision fixtures, stages, and custom measurement setups.

This micrometer head is used in precision measurement fixtures, optical bench setups, machine tool positioning systems, and metrology instrumentation where fine linear adjustment is required. The 1/4 inch (6.35 mm) diameter spindle extends 27 mm (approximately 1.063 inches) and mates with a plain stem measuring 0.375 inch diameter by 15 mm long. It is suited for both shop-floor and laboratory environments where manual, mechanical actuation is preferred over digital or motorized alternatives.

Key Features

• Ratchet stop thimble provides consistent measuring force and repeatable readings
• Carbide-tipped flat spindle face resists wear during extended use
• 0.0001 inch accuracy over a 0 to 1 inch measurement range
• Flat rotating spindle end suits flush-contact and non-marring applications
• Chrome-plated finish on body for corrosion resistance and durability
• Plain stem design allows straightforward mounting in standard bored fixtures

Compatibility

Designed as a standalone mechanical micrometer head for integration into precision fixtures, custom measurement devices, and instrumentation setups requiring a 0.375 inch plain stem mount and a 1/4 inch flat spindle.

Installation Notes

Installation is typically performed by machinists or metrologists integrating the head into a fixture or instrument frame. Secure the plain stem into the mounting bore before applying any load to the spindle. Avoid over-tightening the stem clamp, as excess clamping force can affect spindle travel and measurement accuracy. Always verify zero calibration after mounting and before taking measurements.