Spi CMS160714029 Dial Drop Indicator 0-2 in Lug Back

Product Description

The SPI CMS160714029 is a dial drop indicator designed for precise linear measurement in machine tool, metrology, and inspection applications. It covers a measurement range of 0 to 2 inches with a graduation of 0.001 inches per division and 0.1 inches per revolution, giving technicians fine resolution across the full span. Accuracy is rated at 0.004 inches. A lug back mount and a 3/8-inch stem diameter allow secure positioning in magnetic bases and indicator holders. A NIST traceability certification is included, supporting use in quality-controlled environments and documented inspection workflows.

This indicator suits dimensional inspection tasks on mills, lathes, surface plates, and fixture setups in both shop and field environments. The 0-100 dial reading with a white dial face and revolution counter makes it straightforward to track cumulative travel without losing position. Measuring force is rated at 1.50 N, which is low enough to protect delicate workpiece surfaces during contact measurement. Machinists, tool and die workers, quality inspectors, and precision maintenance technicians are the primary users of this type of instrument.

Key Features

• 0 to 2 inch measurement range with 0.001 inch graduations for fine-resolution readings
• 0.1 inches per revolution travel with built-in revolution counter to track total displacement
• Lug back mounting style with 3/8-inch stem diameter for compatibility with standard indicator holders and magnetic bases
• White dial face with 0-100 reading scale for easy, unambiguous readout
• Measuring force of 1.50 N minimizes deflection on sensitive surfaces
• Includes NIST traceability certification meeting US Federal Specifications and AGD Group 2 standards

Compatibility

Designed for use with standard indicator holders, magnetic base arms, and fixtures accepting a 3/8-inch stem diameter. Compatible with setups requiring AGD Group 2 dial indicators per US Federal Specifications.

Installation Notes

A licensed machinist or quality technician should mount the indicator securely in a rigid holder or magnetic base before taking measurements. Ensure the stem is fully seated and the contact point is perpendicular to the measured surface to avoid cosine error. Do not force the plunger beyond its rated 2-inch range. Store the indicator with the plunger in a relaxed, mid-travel position to preserve spring calibration over time.