Starrett 50582 Adjustable Parallel 1-5/16 to 1-3/4 in

Product Description

The STARRETT 50582 is a steel adjustable parallel used in precision layout, setup, and inspection work. It spans a width range of 1-5/16 to 1-3/4 inches, making it a compact but versatile tool for setting consistent gaps and supporting workpieces in a vise or on a surface plate. The body measures 4-3/16 inches long and 9/32 inches thick, keeping it low-profile for tight setups. Machinists, toolmakers, and millwrights rely on adjustable parallels when a fixed parallel set does not provide the exact dimension needed for a given job.

This parallel is suited for machine shop and toolroom environments where precise, repeatable setups are required. Typical applications include supporting workpieces during milling and grinding operations, establishing reference surfaces for layout work, and checking or transferring measurements during inspection. Its steel construction holds up to daily shop use and maintains dimensional stability under clamping pressure.

Key Features

• Adjustable width range: 1-5/16 to 1-3/4 inches (33 mm to 44 mm)
• Body length: 4-3/16 inches (106.36 mm)
• Thickness: 9/32 inches (7.14 mm) for low-profile fitment in tight vise setups
• Steel construction for durability and dimensional stability
• Compact size suitable for benchtop and machine tool applications

Compatibility

Designed as a general-purpose adjustable parallel for use in standard machinist vises, surface plate work, and precision layout applications where a width range of 1-5/16 to 1-3/4 inches is required.

Installation Notes

Adjustable parallels are set by hand prior to placing them in a vise or fixture. Ensure the parallel is fully seated and the adjustment is locked before applying clamping force. Inspect contact surfaces for burrs or debris before use, as contamination will affect accuracy. No special tools or trade licensing are required, but proper metrology practice should be followed to maintain measurement integrity.