Mitutoyo 811-337-10 Dial Durometer Shore D 20HD-90HD

Product Description

The MITUTOYO 811-337-10 is a portable dial durometer designed to measure the hardness of hard rubber, rigid plastics, and similar materials using the Shore D scale. It reads from 20HD to 90HD with 1-point graduation increments, giving field technicians and quality control personnel clear, repeatable readings on a compact analog dial. The sharp point indenter penetrates the surface of dense materials to produce accurate Shore D measurements. The compact form factor makes it well suited for bench use and portable field inspection work where a full-scale bench instrument is not practical.

This durometer is used across industrial, manufacturing, and maintenance applications where material hardness verification is required on hard rubber compounds, rigid plastics, hard wax, and similar dense substrates. It is appropriate for use by quality assurance technicians, maintenance professionals, and materials inspectors who need a fast, portable hardness check without laboratory equipment. The 1.73-inch pressure foot length and 0.71-inch pressure foot width provide a stable contact surface during measurement.

Key Features

• Shore D scale covers 20HD to 90HD hardness range
• 1-point Shore graduation for precise, readable increments
• Sharp point indenter for accurate penetration on hard, dense materials
• 30-degree tip angle per Shore D indenter specification
• Compact portable design suited for field and bench inspection
• Pressure foot measures 1.73 inches long by 0.71 inches wide for stable contact

Compatibility

Designed for hardness testing of hard rubber, rigid plastics, and similarly dense materials on the Shore D scale. Confirm material hardness range falls between 20HD and 90HD before use.

Installation Notes

Durometer measurements should be taken on a flat, smooth surface with the instrument held perpendicular to the test piece. Apply the pressure foot firmly and evenly to the specimen surface before reading the dial. No electrical power or shutdown procedures are required for operation. Follow ASTM D2240 or equivalent test method standards for consistent, repeatable results.