Spi 13-190-4 Dial Depth Gauge 0-22 Inch Steel

Product Description

The SPI 13-190-4 is a dial depth gauge designed for precise depth measurements in machining, fabrication, and inspection applications. Built with a steel construction and a white dial face, this gauge reads from 0 to 22 inches with a graduation of 0.001 inch and an accuracy of 0.001 inch. The 1-inch travel dial mechanism pairs with interchangeable extension rods to reach the full measurement range. The 3.2-inch base provides stable contact across the measured surface. This tool is used by machinists, quality control technicians, and fabricators who require repeatable, high-resolution depth readings on slots, bores, steps, and shoulders.

The SPI 13-190-4 suits general-purpose depth measurement tasks in job shops, production floors, and inspection stations. The interchangeable rod design allows the user to select the appropriate rod length for the target depth, making it adaptable across a wide range of workpiece configurations. The white dial face improves readability under shop lighting. This gauge is appropriate for both manual machining environments and quality assurance workflows where traceable measurement documentation is required.

Key Features

• 0 to 22 inch measurement range via interchangeable extension rods
• 0.001 inch graduation and 0.001 inch accuracy for high-resolution depth readings
• 1 inch dial travel per rod setting
• 3.2 inch base length for stable surface contact
• Steel construction for durability in shop environments
• White dial face for clear readability under typical shop lighting

Compatibility

Designed as an OEM-style dial depth gauge suitable for general-purpose depth measurement applications in machining, fabrication, and inspection environments where a 0 to 22 inch range and 0.001 inch resolution are required.

Installation Notes

This gauge is a handheld precision measuring instrument and does not require permanent installation. Before use, verify the base is clean and free of burrs or debris that could affect contact and introduce measurement error. When swapping extension rods, zero the dial against a reference surface to confirm accuracy. Handle the instrument carefully to avoid shock or drops, which can affect calibration and dial mechanism integrity.