Starrett 51291 Taper Gage 1/2 to 1 Inch 10 Leaf

Product Description

The STARRETT 51291 is a 10-leaf taper gage designed to measure inside dimensions from 0.5 inches to 1 inch with a graduation of 0.001 inches. The leaves are constructed from tempered steel, providing the durability and rigidity required for accurate, repeatable readings in production and maintenance environments. At 2.75 inches in length, this gage is compact enough for close-quarter work. A built-in locking device holds the leaf position once the correct fit is found, allowing the technician to transfer the measurement without losing the setting. Machinists, toolmakers, and die makers are the primary users of this instrument.

This taper gage is suited for determining hole sizes in dies and other workpieces where a direct caliper measurement is impractical. It is well suited for shop-floor inspection tasks in both production and job-shop settings. The 10-leaf configuration provides a range of fixed blade thicknesses within the 0.5 inch to 1 inch span, making it a practical tool for checking bores, slots, and openings in metal fabrication and tooling work.

Key Features

• Measurement range: 0.5 inches to 1 inch
• Graduation: 0.001 inches for precise readings
• 10 tempered steel leaves for durability and consistent spring-back
• Locking device secures leaf position for measurement transfer
• Compact 2.75-inch body for use in confined areas
• Designed for determining hole sizes in dies and machined workpieces

Compatibility

Designed as a general-purpose inside taper gage for use in metalworking, toolmaking, and die inspection applications requiring measurements in the 0.5 inch to 1 inch range.

Installation Notes

No installation is required for this hand measurement tool. Prior to use, ensure the workpiece is clean and free of burrs or debris that could affect reading accuracy. Engage the locking device before withdrawing the gage from the measured opening to preserve the setting. This instrument should be stored in a clean, dry location to prevent corrosion of the tempered steel leaves.