Fowler 54-530-145-0 Electronic Drop Indicator 0-1 in

Product Description

The FOWLER 54-530-145-0 is an electronic drop indicator designed for precision measurement in machining, metrology, and inspection applications. It covers a measurement range of 0 to 1 inch with an accuracy of 0.0004 inches and a resolution of 0.0005 inches. The unit features an LCD display for easy reading and an aluminum housing for durability in shop environments. Machinists, tool-and-die technicians, and quality control inspectors use this indicator when verifying flatness, runout, and surface alignment on workholding setups and fixtures.

This drop indicator is suited for use on surface plates, magnetic bases, and indicator stands in both production and inspection settings. The center lug back mounting style is standard for drop indicator holders and magnetic arm assemblies. Measurements are displayed in both inch and metric units, making it versatile for shops working to either standard. A CR2032 battery is included, so the unit is ready to use out of the box.

Key Features

• Measurement range of 0 to 1 inch (0 to 25.00 mm)
• Accuracy of 0.0004 inches (0.010 mm)
• Resolution of 0.0005 inches (0.010 mm)
• LCD display for clear numeric readout
• Center lug back for standard drop indicator mounting
• Aluminum housing for lightweight durability
• Dual-unit readout: inch and metric
• Battery-powered with CR2032 included

Compatibility

Designed for use with standard drop indicator holders, magnetic bases, and indicator arms that accept a center lug back mounting style and a 3/8-inch stem diameter.

Installation Notes

Installation is performed by machinists or metrology technicians. Secure the center lug back to a compatible indicator holder or magnetic arm before applying any contact pressure to the spindle. Ensure the stem is clamped on the 3/8-inch diameter section and that the indicator is oriented plumb to the surface being measured. Replace the CR2032 battery when the low-battery indicator appears on the LCD to maintain measurement accuracy.