Spi CMS160725092 Dial Drop Indicator 1 in Nist

Product Description

The SPI CMS160725092 is a dial drop indicator designed for precision dimensional measurement in tool rooms, machine shops, and quality control environments. It delivers a 1-inch total measurement range with 0.001-inch graduations and a 0-100 dial reading, providing clear, repeatable readings across each 0.1-inch revolution. Accuracy is rated at 0.002 inches. The 2.2-inch black dial face aids readability, and the built-in revolution counter tracks cumulative travel beyond a single revolution. A NIST Traceability Certification is included, supporting documented calibration requirements in inspection and metrology applications.

This drop indicator is suited for surface plate inspection, fixture setup, runout checks, and machine alignment tasks common in manufacturing and precision machining environments. The lug-back mounting and 3/8-inch stem diameter allow positioning in standard magnetic bases, articulating arms, and indicator holders. The universal positioning capability and easy-reading dial make it a practical choice for both bench inspection and in-machine measurement setups handled by machinists, toolmakers, and quality technicians.

Key Features

• 1-inch measurement range with 0.001-inch dial graduation for fine resolution
• 0.002-inch accuracy rating meets shop-floor and inspection requirements
• 2.2-inch black dial face with 0-100 reading scale for clear visibility
• Built-in revolution counter tracks travel across multiple 0.1-inch-per-revolution cycles
• Lug back with 3/8-inch stem diameter fits standard indicator holders and magnetic bases
• NIST Traceability Certification included for calibration documentation

Compatibility

Designed for use with standard dial indicator holders, magnetic bases, and articulating arms accepting a 3/8-inch stem diameter and lug-back mounting configuration.

Installation Notes

Installation is performed by machinists, toolmakers, or quality technicians using a standard indicator holder or magnetic base. Secure the 3/8-inch stem firmly in the holder before zeroing the dial to avoid measurement drift. Ensure the measuring contact is perpendicular to the surface being measured to prevent cosine error. Handle the indicator carefully to avoid shock loads, which can damage the gear train and affect accuracy.