Starrett 64221 Dial Test Indicator Kit 7 Piece

Product Description

The STARRETT 64221 is a 7-piece dial test indicator kit designed for precision measurement in machining, toolroom, and metrology applications. The kit centers on a dial test indicator with a 1-3/8 inch (34.93 mm) dial diameter, a 0-40-0 dial reading, and a dial graduation of 0.01 mm, making it well suited for close-tolerance runout checks, surface alignment, and fixture setups. The yellow dial face provides clear contrast for fast readings. The carbide contact point and full accessory set allow the indicator to be mounted and repositioned quickly across a range of workholding and machine tool configurations. Licensed machinists, tool and die makers, and precision mechanics are the primary users.

This kit is built for use in manual machining, CNC setup verification, and quality control environments where repeatable, fine-increment readings are required. The contact point length is 20.64 mm with a 2 mm ball diameter (0.078 inches), suited for reaching into tight bores or along flat surfaces. The included accessories allow the indicator to be adapted to dovetail mounts, swivel posts, and tool posts without sourcing additional hardware.

Key Features

• Dial graduation of 0.01 mm for fine-increment measurement
• 1-3/8 inch (34.93 mm) dial diameter with high-contrast yellow face and 0-40-0 reading
• Carbide contact point for extended wear resistance
• 2 mm ball diameter contact with 20.64 mm contact point length
• 7-piece kit includes carbide contact, case, dial test indicator, dovetail body clamp, snug and rod unit, swivel post snug with dovetail indicator clamp, and tool post holder
• Dovetail-compatible mounting system for broad workholding adaptability

Compatibility

Designed as an OEM-style replacement and direct-use dial test indicator kit for standard dovetail-mount indicator systems common in toolroom and machine shop environments.

Installation Notes

Installation is performed by machinists or toolroom technicians familiar with indicator mounting and machine setup procedures. Secure the indicator in the appropriate clamp or holder before zeroing; ensure the contact point is perpendicular or at the correct approach angle to the measured surface to avoid cosine error. Power down any CNC spindle or moving axis before positioning the indicator. Do not overtighten dovetail clamp screws, as this can distort the indicator body and affect calibration.