Spi AB Edge Finder 0.2 in Head 0.5 in Shank Mechanical

Product Description

The SPI AB is a mechanical edge finder designed for use on milling machines, machining centers, and manual mills to precisely locate part edges and center points before machining operations begin. The tool features a 0.2-inch cylindrical contact head mounted on a 0.5-inch shank, and it operates without batteries or electronics — motion from the spindle drives the mechanical action. An audible alert signals the moment of edge contact, giving the operator a clear, repeatable indication of position. Machinists and CNC setup technicians use this tool as a standard part of workpiece setup.

This edge finder is suited for job shops, tool rooms, and production machining environments where repeatable edge location is required before cutting begins. It is used with manual knee mills, Bridgeport-style machines, and vertical machining centers running at typical finder speeds. The single-end configuration keeps the tool compact and easy to handle during setup. The cylindrical contact head works on flat, square, and prismatic workpiece surfaces.

Key Features

• 0.2-inch cylindrical contact head for precise edge and center location
• 0.5-inch shank diameter fits standard collets and tool holders
• Mechanical operation requires no batteries or external power
• Audible edge alert provides a clear, repeatable contact signal
• Single-end design for straightforward spindle mounting

Compatibility

Designed for use with milling machines and machining centers accepting a 0.5-inch shank tool holder or collet.

Installation Notes

Install the edge finder in a 0.5-inch collet or tool holder and tighten securely before use. Power down the machine and confirm the spindle is stationary before mounting or removing the tool. Run the spindle at a low RPM appropriate for edge-finding operations as specified in the machine tool documentation. Handle the contact tip carefully to avoid damage that would affect measurement accuracy.