Spi 98-334-6 Indicator Positioner Holder 175 Lb Magnetic

Product Description

The SPI 98-334-6 is a magnetic-base indicator positioner holder designed to secure dial indicators and similar precision measuring instruments during inspection and quality-control work. It features a 175-pound magnetic pull force, providing a stable, vibration-resistant hold on ferrous surfaces. The arm and holder assembly extends to an overall length of 12 inches, giving technicians the reach needed to position an indicator over a workpiece without obstruction. A 3/8-inch clamping diameter and M8 x 1.25 thread size allow for standard tool and accessory attachment. Machinists, metrologists, and quality-control technicians install and use this type of holder at machine tools, surface plates, and inspection fixtures.

This holder is suited for shop-floor and inspection-room applications where a reliable magnetic mount is required. It is appropriate for use on milling machines, lathes, grinders, and other ferrous machine tool surfaces. The 12-inch arm length accommodates setups where the indicator must be offset from the magnetic base. No fine adjustment mechanism is included, so positioning is achieved through the articulating arm segments. The base mount type is magnetic, and no separate base is included in this package — the assembly ships with the arm and holder only.

Key Features

• 175-pound magnetic pull force for firm, stable hold on ferrous surfaces
• 12-inch overall arm length for extended reach and flexible positioning
• 3/8-inch clamping diameter compatible with standard indicator shanks
• M8 x 1.25 thread size for secure accessory attachment
• Arm and holder included; no separate base required for use with existing magnetic bases
• Magnetic base mount type — attaches directly to ferrous machine surfaces

Compatibility

Designed as an OEM-style indicator positioner holder compatible with standard 3/8-inch shank dial indicators and similar precision measurement instruments mounted on ferrous machine tool surfaces.

Installation Notes

Installation is performed by machinists and quality-control technicians. Before mounting, ensure the target surface is clean, flat, and free of chips or coolant that could reduce magnetic holding force. Activate the magnetic base only after the arm and indicator are positioned to prevent unintended movement during setup. Do not mount on non-ferrous surfaces, as the magnetic base will not hold.