Spi MS160712141 Hole Micrometer 0.1200-0.1600 in

Product Description

The SPI MS160712141 is a mechanical hole micrometer designed to measure small internal bore diameters with high precision. It covers a measurement range of 0.1200 to 0.1600 inches and delivers an accuracy of 0.0001 inches with a graduation of 0.0001 inches. The instrument features carbide measuring surfaces for durability and a ratchet stop thimble for consistent gauging pressure on every measurement. It ships with a NIST traceability certification, making it suitable for calibrated inspection work in shops, maintenance environments, and quality control applications.

This hole micrometer is used in precision machining, tool and die, maintenance and repair operations, and quality inspection settings where small internal bore diameters must be confirmed to close tolerances. The self-centering contact points align the instrument automatically within the bore, reducing operator error. A setting ring with a diameter of 0.1600 inches is included for field zeroing and verification. The chrome finish resists corrosion during regular shop use.

Key Features

• Measurement range of 0.1200 to 0.1600 inches for small internal bores
• Accuracy of 0.0001 inches with 0.0001-inch graduation
• Carbide measuring surfaces for extended wear resistance
• Ratchet stop thimble for repeatable, consistent gauging pressure
• Self-centering two-point contact for accurate bore alignment
• NIST traceability certification included for calibrated inspection compliance
• One setting ring included for field zeroing and verification

Compatibility

Designed as an OEM-style precision measurement instrument for use in any shop or inspection environment requiring internal bore measurement in the 0.1200 to 0.1600 inch range.

Installation Notes

This instrument is used by machinists, tool and die makers, and quality control technicians. Before use, zero the micrometer against the included setting ring following the manufacturer's calibration procedure. Clean the measuring surfaces and bore thoroughly before gauging to avoid false readings. Store in the provided case to protect the carbide contact points and maintain calibration integrity.