Starrett 52761 Magnetic Indicator Base Flexible Arm

Product Description

The STARRETT 52761 is a magnetic indicator base designed to hold dial indicators and similar measuring instruments securely during precision measurement work. The base features a flexible arm for versatile positioning and an on/off magnetic switch that allows the technician to attach and release the unit from ferrous surfaces without disturbing the setup. The base measures 1.875 inches in length, 1 inch in width, and 1.9375 inches in height, with a rod length of 3 inches. Machinists, tool and die makers, maintenance technicians, and quality control personnel use this type of base in machine shop and industrial maintenance environments.

The STARRETT 52761 is suited for use on machine tool tables, surface plates, lathes, mills, and other ferrous metal surfaces where a dial indicator or test indicator must be held in a fixed position during inspection or alignment work. The flexible arm allows the user to route the arm around obstructions and position the indicator tip precisely on the workpiece or spindle. It is a standard bench and floor-level measurement accessory used in both production and maintenance settings.

Key Features

• On/off magnetic switch allows secure attachment to ferrous surfaces and clean release without shifting the setup
• Flexible arm provides adjustable reach and positioning around workpiece geometry
• Compact base footprint at 1.875 inches x 1 inch x 1.9375 inches suits tight machine table setups
• 3-inch rod length extends indicator reach from the base
• Single-piece package quantity suitable for individual technician use

Compatibility

Designed as an OEM-style accessory base compatible with standard dial indicators and test indicators that mount to a magnetic base rod or articulating arm holder in typical machine shop and industrial maintenance applications.

Installation Notes

Installation of a magnetic indicator base requires a clean, flat ferrous metal surface free of chips, coolant film, or debris for maximum holding strength. Engage the magnetic switch only after positioning the base near the intended mount location. Ensure the indicator is securely clamped to the arm before energizing the magnet to avoid instrument movement. This work is typically performed by machinists or maintenance technicians without special tools beyond the indicator mounting hardware.