Starrett 55821 Radius Gage Millimeter Set 22 Gages

Product Description

The STARRETT 55821 is a combined millimeter radius gage set designed for measuring concave and convex radii on machined parts, castings, and fabricated components. This set brings together the S167MB and S167MAH gage sets into one complete package. It covers a range of 0.5 mm to 15 mm across 22 individual gages, with increments of 0.5 mm in the lower range and 1 mm in the upper range. Machinists, tool-and-die makers, and precision fabricators use this type of set to verify radius dimensions quickly during inspection and quality control work.

This set is suited for use in machine shops, toolrooms, and fabrication environments where metric radius verification is required. The combined range of 0.5 mm to 7 mm and 8 mm to 15 mm provides broad coverage for general-purpose metric work. It is appropriate for both production floor checks and bench inspection tasks where a dedicated radius gage set is needed.

Key Features

• Combines S167MB and S167MAH sets into a single complete unit
• Covers 0.5 mm to 15 mm total radius range
• 0.5 mm increments from 0.5 mm to 7 mm
• 1 mm increments from 8 mm to 15 mm
• 22 individual radius gages included
• Metric measurement standard throughout

Compatibility

Designed as a direct-use metric radius gage set compatible with standard toolroom and inspection applications requiring 0.5 mm to 15 mm radius measurement; includes components equivalent to S167MB and S167MAH sets.

Installation Notes

Radius gages require no installation and are hand tools used by machinists and inspection personnel. Store gages in their holder when not in use to prevent blade damage. Wipe blades clean and dry after each use to prevent corrosion. Handle individual gage blades carefully to avoid bending, which can affect measurement accuracy.

Technical Specifications

• Radius Range: 0.5 mm to 15 mm
• Number of Gages: 22
• Lower Range Increment: 0.5 mm (0.5 mm to 7 mm)
• Upper Range Increment: 1 mm (8 mm to 15 mm)
• Included Sets: S167MB and S167MAH combined
• Measurement Standard: Metric

Standard Information

• Brand: STARRETT
• Manufacturer Part Number: 55821