Spi 29-000-7 Electronic Outside Micrometer 1 in IP65

Product Description

The SPI 29-000-7 is an electronic outside micrometer designed for precision dimensional measurement in demanding shop and field environments. It measures external features up to 1 inch with a resolution of 0.000050 inches and an accuracy of 0.000150 inches. The measuring faces are solid carbide, providing wear resistance over extended use. The unit carries an IP65 ingress protection rating, meaning it is sealed against dust and low-pressure water jets. A CR2032 battery powers the digital readout, and an automatic shut-off feature conserves battery life. Machinists, quality control technicians, and metrologists are the typical users.

The 29-000-7 is suited for precision measurement tasks in machine shops, toolrooms, and quality assurance departments. It handles close-tolerance inspection of round stock, shafts, pins, and similar external features up to 1 inch. The included ball attachment extends measurement versatility for certain curved or irregular surfaces, and the included case protects the instrument during storage and transport. The throat depth is 1 inch, which determines how far from an edge the micrometer can reach.

Key Features

• 0.000050 inch resolution for high-precision readings
• 0.000150 inch accuracy across the measurement range
• Solid carbide measuring faces for long-term wear resistance
• IP65-rated housing resists dust and water intrusion
• Automatic shut-off preserves CR2032 battery life
• Includes ball attachment and protective carrying case

Compatibility

Designed as a standalone electronic outside micrometer for general precision measurement applications up to 1 inch; no specific system or equipment compatibility is required for use.

Installation Notes

Outside micrometers require no installation, but proper calibration against a known standard before use is essential to maintain measurement integrity. Store the instrument in its included case when not in use and keep the measuring faces clean and free of debris. Do not overtighten the thimble against a workpiece; use the ratchet stop or friction thimble to apply consistent measuring force. Battery replacement uses a standard CR2032 cell.