Fowler 52-240-006-1 Mechanical Outside Micrometer 6 in

Product Description

The FOWLER 52-240-006-1 is a mechanical outside micrometer designed for precise linear measurement of external dimensions. It covers a full 6-inch measurement range with a graduation of 0.0001 inches and an accuracy of 0.000250 inches, making it suitable for close-tolerance inspection work in machine shops, fabrication environments, and on-site dimensional verification. The ratchet stop thimble delivers consistent measuring pressure on every reading, and the solid carbide measuring faces resist wear under repeated use. A quick, easy zero adjustment on the sleeve keeps the instrument calibrated without sending it out for service.

This micrometer is used wherever external dimension verification is required across a 0 to 6-inch range. Typical applications include inspection of shafts, fittings, valve seats, and machined components in mechanical, HVAC, plumbing, and electrical fabrication settings. It is appropriate for tool rooms, production floor QC checks, and field measurement by trades professionals who need a reliable, non-digital measuring instrument. The unit ships with a protective case and a sleeve wrench for zero adjustment.

Key Features

• 6-inch maximum measurement range with 0.0001-inch graduation
• Accuracy of 0.000250 inches for close-tolerance inspection
• Ratchet stop thimble ensures consistent, repeatable measuring pressure
• Solid carbide measuring faces provide long-term wear resistance
• Quick zero adjustment on sleeve - no special calibration equipment needed
• Includes protective case and sleeve wrench

Compatibility

Designed as a standard mechanical outside micrometer suitable for general-purpose external dimensional measurement across a wide range of trade and inspection applications.

Installation Notes

Handle measuring faces with care - contamination or impact damage will affect accuracy. Before use, verify zero calibration using the included sleeve wrench and a known standard or the clean-contact zero method. Store in the included case when not in use to protect the measuring faces and thimble. Periodic re-zeroing is recommended when the instrument has been exposed to temperature changes or physical shock.