Spi 14-402-2 Magnetic Indicator Base on Off Switch

Product Description

The SPI 14-402-2 is a magnetic indicator base designed to hold dial indicators and similar precision measuring instruments securely during inspection and machining operations. The base uses a powerful 160-pound magnetic pull to grip ferrous surfaces, keeping the indicator stable while measurements are taken. A built-in on/off switch lets the technician engage or release the magnetic field quickly without disturbing the setup. The lug-style mount is compatible with standard indicator stems and accessories. This type of base is a standard tool in machine shops, fabrication environments, and precision metrology setups where consistent, vibration-free indicator positioning is required.

The 14-402-2 is suited for use on milling machines, surface plates, engine lathes, grinders, and similar ferrous machine tool surfaces. It is commonly used by machinists, tool and die makers, and quality control technicians to position dial indicators, test indicators, and comparators for runout checks, surface flatness verification, and part alignment. The compact footprint makes it practical in tight setups where larger bases would obstruct access.

Key Features

• 160-pound magnetic pull for firm, stable attachment to ferrous surfaces
• On/off switch allows quick magnetic engagement and release without shifting the setup
• Lug-style mount accommodates standard indicator stems and accessories
• Compact base footprint at 2.25 inches long, 2 inches wide, and 2.125 inches tall
• Lightweight at 2 pounds for easy repositioning

Compatibility

Designed as a standard lug-mount magnetic indicator base for use with dial indicators, test indicators, and comparators on ferrous machine tool surfaces and surface plates.

Installation Notes

Place the base on a clean, flat ferrous surface free of chips, oil, and debris to achieve full magnetic holding force. Engage the on/off switch only after positioning the base to avoid uncontrolled attraction to the work surface. Verify the indicator stem is fully seated and locked in the lug before taking measurements. No permanent mounting or wiring is required for this product.