Spi 13-963-4 Flexible Steel Rule 48 Inches 16R

Product Description

The SPI 13-963-4 is a 48-inch flexible steel rule with a satin chrome-plated finish, designed for precision layout and measurement tasks in fabrication, machining, and mechanical trade work. At 3/4 inch wide and 0.0200 inch thick, the blade is thin and flexible enough to conform to curved surfaces while maintaining accurate readings. The 16R graduation pattern provides four scales — 1/32, 1/64, 1/50, and 1/100 inch — giving tradespeople and machinists the resolution needed for both standard and fine-tolerance work. The silver satin chrome finish reduces glare and improves scale readability in typical shop lighting conditions.

This rule is suited for use in machine shops, HVAC fabrication, plumbing rough-in layout, and general mechanical service environments where a long, readable, flexible measuring reference is required. The horizontal scale orientation supports straightforward linear measurement without repositioning. No hook is included, and the rule is non-magnetic, making it appropriate for use near sensitive components or electronic assemblies where magnetic tools are not acceptable.

Key Features

• 48-inch overall length for extended measurement without repositioning
• Flexible steel construction conforms to curved or irregular surfaces
• 16R graduation with four scales: 1/32, 1/64, 1/50, and 1/100 inch
• Satin chrome-plated finish reduces glare and resists corrosion
• 3/4-inch blade width provides ample surface for clear scale markings
• Non-magnetic — safe for use near electronic components

Compatibility

Designed as a general-purpose flexible steel rule suitable for machine shop, fabrication, and mechanical trade measurement applications requiring a 48-inch, 16R-graduated blade.

Installation Notes

No installation is required for this measuring tool. Store the rule flat or rolled loosely to prevent permanent set in the blade. Avoid using the rule as a pry or cutting guide, as this can distort the blade and compromise measurement accuracy. Clean with a dry cloth after use to preserve the satin chrome finish.