Fowler 54-520-260-0 Electronic Drop Indicator 25mm

Product Description

The FOWLER 54-520-260-0 is an electronic drop indicator designed for precision dimensional measurement in machine shop, toolroom, and quality control environments. Part of the Indi-X Blue Electronic Indicator series, it delivers a measurement range of 0 to 25 mm (0 to 1 inch) with a resolution of 0.0005 inches (0.01 micrometers) and an accuracy of 0.001 inches (0.03 mm). The lug back mounting configuration allows secure fixture to magnetic bases and surface gauges. The carbide-tipped solid carbide contact point resists wear during repeated contact cycles, making this indicator a reliable choice for high-volume inspection work. Machinists, metrologists, and quality technicians are the primary users of this instrument.

This indicator is suited for residential machine shops, production floors, and inspection labs where repeatable drop-style measurement is required. It is used to check runout, surface variation, bore alignment, and part flatness on milled, turned, and ground workpieces. The 3/8-inch stem diameter fits standard magnetic base holders and universal indicator arms found in most shop environments. The dual-unit readout supports both inch and metric measurement, eliminating manual conversion during mixed-standard inspection tasks.

Key Features

• Measurement range of 0 to 25 mm (0 to 1 inch) for versatile inspection applications
• Resolution of 0.0005 inches (0.01 micrometers) for fine measurement discrimination
• Accuracy of 0.001 inches (0.03 mm) across the full measurement range
• Solid carbide contact point resists wear during high-cycle use
• Lug back design secures to standard magnetic bases and surface gauge arms
• Inch and metric dual-unit display eliminates manual unit conversion
• Part of the Indi-X Blue Electronic Indicator series

Compatibility

Designed for use with standard 3/8-inch stem diameter indicator holders, magnetic bases, and universal gauge arms common in machine shop and quality control setups.

Installation Notes

This instrument is installed and serviced by machinists, metrologists, and quality technicians familiar with precision measurement equipment. Before mounting, ensure the indicator stem is fully seated and the locking clamp on the holder is secure to prevent movement during measurement. Zero the indicator at the reference datum before taking readings, and avoid lateral side loading on the contact point, as this can introduce measurement error and accelerate wear. Handle with care to protect the electronic display and internal mechanism from impact and contamination.