Spi 67R-8X8-.0005 Square Inspection Block Level

Product Description

The SPI 67R-8X8-.0005 is a precision square inspection block level designed for high-accuracy surface and alignment verification in machine shops, toolrooms, and metrology environments. Built from cast iron, the unit measures 8 inches in both length and height with a 1-9/16 inch width, and weighs 8.5 pounds. It features two vials and delivers a graduation sensitivity of 0.0005 inches per 10 inches, making it suitable for precision leveling tasks where tight tolerances are required. Base flatness is held to 0.000250 inches, supporting reliable contact with reference surfaces.

This square inspection block level is used in industrial and toolroom settings for checking and establishing level on machine beds, surface plates, rotary tables, and similar equipment. Its square profile and cast iron construction allow stable placement on vertical or horizontal reference surfaces. Machinists, tool and die makers, and metrology technicians install and use this type of instrument as part of machine setup, alignment verification, and quality inspection workflows.

Key Features

• Graduation sensitivity of 0.0005 inches per 10 inches for high-precision leveling
• Base flatness of 0.000250 inches for accurate surface contact
• Cast iron construction provides stability and resistance to wear
• Dual-vial design allows simultaneous reading in two axes
• 8 x 8 inch profile suits a wide range of machine and surface plate applications
• Compact 1-9/16 inch width minimizes footprint on reference surfaces

Compatibility

Designed as an OEM-style precision measurement tool suitable for use on standard surface plates, machine tool beds, and inspection fixtures requiring high-sensitivity level verification.

Installation Notes

This instrument is typically handled by machinists or metrology technicians during machine setup or inspection procedures. Clean all contact surfaces thoroughly before placing the block to avoid debris affecting vial readings. Handle with care to protect the ground base and vials from impact. Store in a protective case when not in use to preserve calibration and base flatness.