Spi 20-231-7 Electronic Thickness Gage Through Coating

Product Description

The SPI 20-231-7 is an electronic thickness gage designed for precise, non-destructive measurement of material thickness, including through-coating applications. It features a steel anvil face and delivers an accuracy of 0.0015 inches, making it suitable for quality control and inspection tasks in the field or shop. This instrument is used by tradespeople, inspectors, and machinists who need reliable thickness readings on coated or uncoated surfaces without damaging the workpiece. The compact form factor supports single-handed operation during routine measurement tasks.

The 20-231-7 is well suited for measuring metal substrates, painted surfaces, and coated panels in HVAC, fabrication, and industrial maintenance applications. The through-coating capability allows technicians to measure base material thickness without stripping or damaging surface coatings. It is appropriate for both shop bench work and on-site inspection where accurate thickness data is required before or after surface treatment processes.

Key Features

• Through-coating measurement capability allows readings without removing surface coatings
• Accuracy of 0.0015 inches for precise quality control and inspection work
• Steel anvil face provides durable contact surface for repeated use
• Electronic display for direct, easy-to-read thickness values
• Compact dimensions support portable field and bench use

Compatibility

Designed as an OEM-style electronic thickness measurement instrument suitable for general industrial, HVAC fabrication, and maintenance inspection applications where through-coating thickness gauging is required.

Installation Notes

This instrument requires no installation but should be zeroed and calibrated against a known reference standard before use, following the manufacturer calibration procedure. Handle the anvil faces with care to avoid nicks or contamination that could affect measurement accuracy. Store the gage in its protective case when not in use to prevent damage to the sensing faces. Calibration and use should comply with applicable shop quality or inspection standards.