Sine Bars

Suburban Tool Precision Sine Bars | Hardened Steel Angle Verification Tools

Suburban Tool’s precision sine bars are essential for accurate angle measurement, setup, and inspection in machining, grinding, and toolroom environments. Designed to effectively "cancel" the angle being measured, these sine bars provide a reliable method to verify or inspect angular accuracy using standard gage blocks.

Each sine bar is manufactured from high-quality hardened steel (Rc 58–60) for outstanding durability and long-term stability. The precision-ground working surfaces and sine rolls ensure consistent and repeatable results, even in demanding industrial settings.

An adjustable end rail is included with every sine bar and can be mounted at either end, providing flexibility for different setups and part sizes. Whether you're inspecting tooling, setting angles on a surface grinder, or calibrating equipment, Suburban Tool’s sine bars deliver trusted precision with every use.

Key Features:

• Verifies or cancels measured angles for inspection and setup

• Made from high-quality steel, hardened to Rc 58–60

• Precision-ground surfaces for accurate and repeatable performance

• Includes a removable end rail, mountable on either end for flexible use

• Ideal for use with standard gage blocks in angle inspection setups

Applications:

• Surface grinder and mill angle setups

• Tool and die inspection

• Machining accuracy verification

• Calibration and metrology labs