Spi 61R-8-.0001 Precision Inspection Block Level

Product Description

The SPI 61R-8"-.0001 is a cast iron precision inspection block level designed for high-accuracy surface and machine tool leveling applications. Built with two vials and a graduation sensitivity of 0.0001 inches per 10 inches, it delivers the fine resolution required for precision alignment and inspection work. The 8-inch base length and 1-9/16-inch width provide stable contact across flat reference surfaces. This tool is intended for use by machinists, toolroom technicians, and precision measurement professionals working in manufacturing and inspection environments.

This inspection block level is suited for leveling machine tools, surface plates, and precision equipment in both shop floor and toolroom settings. The cast iron construction provides thermal stability and rigidity, which are essential when working to tight tolerances on milling machines, lathes, grinders, and similar machinery. Its compact footprint allows placement in confined areas where larger levels cannot be positioned effectively.

Key Features

• Graduation sensitivity of 0.0001 inches per 10 inches for high-precision alignment
• 8-inch base length provides a stable reference span for machine leveling
• Cast iron body offers rigidity and thermal stability during measurement
• Two vials allow simultaneous reading in multiple orientations
• Base flatness of 0.0001 inches ensures accurate surface contact
• 1-9/16-inch width fits standard keyways and machine surfaces

Compatibility

Designed as an OEM-style precision inspection block level suitable for use on machine tools, surface plates, and flat reference surfaces requiring 0.0001-inch sensitivity per 10 inches.

Installation Notes

This level is installed and used by machinists and precision instrument technicians. Before use, clean the base and reference surface thoroughly to remove chips, oil, and debris that could affect reading accuracy. Avoid placing the level on painted or rough surfaces that do not meet the flatness requirements for precision measurement. Handle with care to prevent drops or impacts that can damage vials or alter base flatness.