Starrett 52757 Magnetic Indicator Base with on Off Switch

Product Description

The STARRETT 52757 is a magnetic indicator base designed to hold dial indicators and test indicators securely during precision measurement tasks. The base uses an on/off magnetic switch to lock onto ferrous surfaces, allowing the technician to position and reposition the indicator without disturbing the workpiece setup. The base measures 1.875 inches in length, 1.625 inches in width, and 1.9375 inches in height, with a post height of 7.4375 inches. At 1.25 pounds, it provides a stable footprint for typical machine tool and inspection surface applications. The rod is not included and must be sourced separately.

This indicator base is suited for use in machine shops, toolrooms, and quality control environments where dial or test indicators need to be mounted to mill tables, surface plates, lathe beds, or other ferrous machine surfaces. The on/off switch allows quick placement and removal without dragging the base across sensitive work surfaces. It is compatible with standard indicator rods and post systems up to 9.5 inches in rod length. Machinists, tool and die makers, and quality technicians are the primary users of this type of base.

Key Features

• On/off magnetic switch for controlled attachment and release from ferrous surfaces
• Base length of 1.875 inches and base width of 1.625 inches for a compact, stable footprint
• Post height of 7.4375 inches provides vertical reach for indicator positioning
• Accepts rods up to 9.5 inches in length (rod not included)
• Weighs 1.25 pounds for solid contact without excess bulk

Compatibility

Designed as an OEM-style magnetic base for use with standard dial indicators and test indicators mounted on ferrous machine surfaces. Rod not included; consult your indicator manufacturer for compatible rod specifications.

Installation Notes

Installation and setup of this magnetic indicator base is typically performed by machinists or quality technicians. Before mounting, ensure the target surface is clean, flat, and free of chips or coolant that could reduce magnetic holding force. Engage the on/off switch only after the base is positioned to avoid uncontrolled movement across precision surfaces. Do not use this base on non-ferrous surfaces where magnetic adhesion is not possible.