Spi 77-635-1 Beveled Straight Edge 60 Inches Spring Steel

Product Description

The SPI 77-635-1 is a precision beveled straight edge manufactured from spring steel, designed for use in layout, inspection, and surface verification applications. Measuring 60 inches in overall length, 3-5/32 inches wide, and 3/8 inches thick, this tool delivers tight edge flatness of 0.0011 inches and parallelism of 0.0020 inches. The single beveled edge allows for accurate line transfer and gap checking against reference surfaces. Machinists, toolmakers, and precision metrology technicians rely on straight edges of this class for verifying flatness on machine beds, surface plates, and fabricated components.

This straight edge is suited for use in machine shops, tool rooms, fabrication facilities, and inspection departments where precise linear reference is required. Its 60-inch working length accommodates larger workpieces and long-bed machine surfaces. Spring steel construction provides a balance of rigidity and resistance to permanent deformation under normal shop use. The single beveled edge is appropriate for line scribe work and direct surface contact checks.

Key Features

• Single beveled edge for precise line transfer and surface verification
• Edge flatness of 0.0011 inches for high-accuracy layout and inspection work
• Parallelism of 0.0020 inches ensures consistent reference across the full length
• Spring steel construction resists permanent deformation and corrosion in shop environments
• 60-inch overall length accommodates large workpieces and machine bed checks
• 3/8-inch thickness provides rigidity with manageable weight

Compatibility

Designed as a general-purpose precision straight edge for use in machine shop, toolroom, and industrial inspection applications where a long-length beveled reference edge is required.

Installation Notes

Straight edges of this type are handled and positioned by machinists or precision measurement technicians. Protect the beveled edge from impact and contact with abrasive surfaces during storage and handling. Clean the reference surface and the straight edge contact face before use to prevent debris from affecting accuracy readings. Store horizontally or in a protective case to prevent bowing over time.