Fowler 52-240-012-1 Outside Micrometer 12 Inch

Product Description

The FOWLER 52-240-012-1 is a mechanical outside micrometer designed for precision measurement in demanding shop and field environments. It covers a measurement range up to 12 inches with a graduation of 0.0001 inches and an accuracy of 0.000350 inches. The ratchet stop thimble delivers consistent measuring pressure, reducing operator-to-operator variation during repeated measurements. The measuring faces are solid carbide, providing long-term durability against wear. Machinists, quality technicians, and precision tradespeople working in fabrication, HVAC equipment manufacturing, or mechanical contracting will find this tool suited for high-tolerance work.

This micrometer is appropriate for large-diameter outside measurement tasks in production, inspection, and maintenance environments. It is well suited for measuring shafts, housings, large-bore fittings, and structural components where standard small-range micrometers cannot reach. The tool ships with a protective case and a wrench for sleeve adjustment, making it ready for immediate use in a professional setting.

Key Features

• 12 inch maximum measurement range for large-scale precision work
• 0.0001 inch graduation for fine-resolution readings
• 0.000350 inch accuracy across the full measurement range
• Ratchet stop thimble ensures consistent, repeatable measuring pressure
• Solid carbide measuring faces resist wear on hardened and abrasive workpieces
• Quick, easy zero adjustment on sleeve minimizes setup time
• Includes protective carrying case and sleeve wrench

Compatibility

Designed as a general-purpose mechanical outside micrometer for professional measurement applications requiring a 12 inch range and 0.0001 inch graduation resolution.

Installation Notes

This instrument is used by machinists, metrology technicians, and precision tradespeople in shop and inspection environments. Before use, clean the measuring faces and verify zero calibration using the included wrench and sleeve adjustment feature. Store in the included case when not in use to protect the carbide faces and maintain calibration. Do not overtighten the thimble against the workpiece; rely on the ratchet stop mechanism to apply consistent measuring pressure.