Spi 13-852-9 Steel Rule 18 Inch 5R Rigid Satin Chrome

Product Description

The SPI 13-852-9 is a rigid steel rule measuring 18 inches in overall length and 1-1/8 inches in overall width. Finished in a satin chrome plating, it delivers clear contrast for accurate readings in workshop and layout environments. The rule features 5R graduation style with three scales: 1/100, 1/32, and 1/64 inch markings. At 0.0400 inches thick, this rule holds its shape under regular use. It is designed for machinists, tool-and-die workers, fabricators, and quality control personnel who require reliable linear measurement in a hand tool format.

This rule is suited for general precision layout, inspection, and measurement tasks in machine shops, fabrication shops, and manufacturing environments. Its horizontal scale orientation and rigid construction make it practical for bench work, scribe line layout, and quick dimensional checks. The satin chrome finish reduces glare under shop lighting, keeping graduation lines easy to read across all three scales.

Key Features

• 18-inch overall length with 1-1/8-inch overall width for stable, full-span measurement
• 5R graduation style with 1/100, 1/32, and 1/64 inch scales on a single rule
• Rigid construction holds form and resists flex during layout and inspection tasks
• Satin chrome-plated steel finish reduces glare and resists corrosion
• 0.0400-inch thickness provides durability without adding unnecessary bulk
• Non-magnetic, no hook — straightforward layout and measurement tool

Compatibility

Designed as a standard rigid steel rule for use in machine shop, fabrication, and inspection applications where 5R graduation and 18-inch length are specified.

Installation Notes

No installation is required for this hand measurement tool. Handle the rule carefully to avoid nicking the edges, which can affect measurement accuracy. Store flat or in a protective sleeve to prevent warping and surface damage. The satin chrome finish should be wiped clean of oils and metal particles after each use to maintain readability.