Spi 647-95132S Sine Bar and Riser Kit 5 in X 1 in

Product Description

The SPI 647-95132S is a hardened steel sine bar and riser kit used for precision angle measurement and workpiece setup in machining and inspection applications. The sine bar measures 5 inches long by 1 inch wide and holds a parallelism tolerance of 0.0002 inches, making it suitable for exacting layout and inspection work on surface plates and machine tool setups. The included riser components allow technicians to establish consistent, repeatable angles when grinding, milling, or inspecting parts to tight angular tolerances. This kit is used by machinists, tool and die makers, and quality control inspectors who require reliable angular reference standards.

This sine bar and riser kit is suited for use in tool rooms, machine shops, and inspection departments. It is appropriate for setups involving surface grinders, milling machines, and coordinate measuring workflows where precise angular positioning is required. The compact 5-inch bar length makes it practical for medium-scale workpiece setups on standard surface plates. Hardened construction helps maintain dimensional stability through repeated use and normal shop handling.

Key Features

• 5 inch bar length supports a range of workpiece and fixture setups
• 1 inch bar width provides a stable reference surface
• 0.0002 inch parallelism tolerance for high-precision angular work
• Hardened steel construction for durability and dimensional stability
• Kit format includes riser components for complete angle setup

Compatibility

Designed as a standard 5-inch sine bar and riser kit compatible with typical surface plate inspection setups and general-purpose tool room applications.

Installation Notes

Sine bar setups are typically performed by machinists or quality control technicians using gauge blocks and a calibrated surface plate. Clean the surface plate and sine bar contact surfaces before use to prevent measurement errors caused by debris or burrs. Do not use the sine bar as a clamping fixture or apply lateral impact loads that could affect the hardened precision surfaces. Follow established metrology practices and your facility's inspection procedures when establishing angular references.