Starrett 50580 Adjustable Parallel 11/16 to 15/16 Inches

Product Description

The STARRETT 50580 is a steel adjustable parallel used for precision layout, setup, and inspection work in machine shops and metalworking environments. The parallel adjusts from 11/16 inch to 15/16 inch in height, spanning a 0.25-inch range, which allows the user to dial in exact workpiece support or measurement reference without swapping tools. The body measures 2-11/16 inches long and 9/32 inch thick, keeping the profile compact for use in tight setups. Machined from steel for dimensional stability, this tool is suited for use in vises, on surface plates, and under workpieces during milling or grinding operations. Machinists and toolroom technicians are the primary users.

The 50580 is used in general machining, tool and die work, and precision metalworking setups where a reliable height reference or workpiece support is needed. Common applications include leveling workpieces in a milling vise, establishing parallel datums on a surface plate, and supporting parts during layout or inspection. The compact length and steel construction make it appropriate for benchtop and machine tool work where dimensional accuracy is critical. It is sold individually and is a standard addition to a machinist setup kit.

Key Features

• Adjustable height range from 11/16 inch to 15/16 inch (17.50 mm to 24.00 mm)
• Steel construction for dimensional stability and long service life
• Compact body at 2-11/16 inches long and 9/32 inch thick
• Suitable for vise setups, surface plate work, and milling or grinding support
• Sold as a single unit, no minimum order requirement beyond one piece

Compatibility

Designed as a standard adjustable parallel for general machining and toolroom applications where a height range of 11/16 inch to 15/16 inch is required.

Installation Notes

Adjustable parallels are set and placed by machinists and toolroom technicians during workpiece setup. Before placing the parallel, ensure the machine is powered down and any moving components are at rest. Clean mating surfaces on the vise or surface plate to prevent dirt from affecting parallel accuracy. Do not use the parallel as a striking surface or apply force beyond its intended clamping load.