Spi 13-847-9 Steel Rule 12 Inch 5R Rigid

Product Description

The SPI 13-847-9 is a rigid steel rule designed for precise linear measurement in trade and industrial applications. Measuring 12 inches in overall length and 1 inch wide, this rule features a satin chrome-plated finish that reduces glare and improves readability in variable lighting conditions. The 5R graduation style provides four measuring scales — 1/100, 1/32, and 1/64 inch — giving technicians and machinists the flexibility to work across multiple tolerances without switching tools. At 0.0400 inches thick, the blade is rigid and flat, holding position reliably against a workpiece.

This rule is suited for layout, inspection, and measurement tasks in HVAC, plumbing, sheet metal fabrication, machining, and general mechanical service work. The horizontal scale orientation and satin chrome surface make it easy to read graduations quickly in shop or field environments. It is a standard handheld measuring tool carried by tradespeople who need consistent fractional and decimal inch readings on a single rule.

Key Features

• 5R graduation style with 1/100, 1/32, and 1/64 inch scales on a single blade
• Rigid steel construction holds flat against surfaces without flexing
• Satin chrome-plated finish minimizes glare for improved scale legibility
• 12-inch overall length with 1-inch width for stable contact across workpieces
• 0.0400-inch blade thickness for consistent edge contact during layout work
• Horizontal scale orientation for straightforward left-to-right reading

Compatibility

Designed as a standard 12-inch rigid steel rule suitable for general measurement and layout applications across HVAC, plumbing, electrical, and mechanical trade work.

Installation Notes

No installation is required for this measuring tool. Handle the rule by its edges to avoid contaminating the scale surface with oils that can obscure graduations. Keep the blade flat and dry during storage to prevent warping or corrosion over time. Inspect the graduation markings periodically for wear, particularly on rules used in abrasive or high-contact environments.