Spi VRS2500-0-03 Electronic Drop Indicator 0.25 in

Product Description

The SPI VRS2500-0-03 is an electronic drop indicator designed for precise dimensional measurement in machine shop, manufacturing, and quality control environments. It measures from 0 to 0.25 inches with a resolution of 0.0001 inches and an accuracy of 0.0001 inches, making it suitable for applications that demand tight tolerances. The lug back mounting style allows secure attachment to magnetic bases and indicator holders. A 3-volt battery powers the electronic display, providing clear digital readout without the parallax error common to analog dial indicators. This instrument is typically used by machinists, toolmakers, and metrology technicians.

The VRS2500-0-03 is suited for surface plate inspection, fixture alignment, runout measurement, and flatness verification. Its 0.38-inch stem diameter is compatible with standard indicator holders and collet-style clamps found on most surface gauge arms and magnetic base assemblies. The compact form factor and lug back design make it a practical choice for tight setups where space is limited. It fits into general-purpose inspection workflows in both production and tool room settings.

Key Features

• Measurement range of 0 to 0.25 inches (0 to 6.35 mm) for short-stroke precision work
• Resolution and accuracy of 0.0001 inches (0.002 mm) for tight-tolerance inspection
• Lug back mounting for compatibility with standard indicator holders and magnetic bases
• 0.38-inch stem diameter fits standard collet clamps and indicator arms
• Digital electronic display eliminates parallax reading error
• Powered by a common 3-volt battery

Compatibility

Designed for use with standard indicator holders, magnetic base assemblies, and surface gauge arms that accept a 0.38-inch stem diameter. Compatible with typical lug back mounting hardware used in machine shop and inspection environments.

Installation Notes

Installation is performed by machinists or metrology technicians using a compatible magnetic base or indicator holder with a collet or lug clamp. Ensure the stem is secured without excessive clamping force to avoid restricting spindle movement. Zero the indicator after mounting and before taking measurements. Follow the instrument manufacturer guidelines for battery replacement and cleaning.