Spi 13-916-2 Flexible Steel Rule 12 Inch 4R

Product Description

The SPI 13-916-2 is a flexible steel rule designed for precision layout and measurement work in trade and industrial applications. It measures 12 inches in overall length and 1/2 inch in overall width, with a thickness of 0.0200 inches that allows it to flex and conform to curved or irregular surfaces. The rule features a 4R graduation style, providing four scales on a single blade: 1/16, 1/32, 1/64, and 1/8 inch increments. A black chrome-plated finish reduces glare and improves contrast on the black-finished blade, making graduation marks easier to read in variable lighting conditions. Licensed trades and precision-oriented technicians rely on this type of rule for scribing, layout, and checking measurements on tight or curved workpieces.

This flexible steel rule suits general trade use across HVAC, plumbing, electrical, and mechanical service work wherever a rigid rule cannot seat flat against a surface. The horizontal scale orientation and fine graduation increments make it well suited for applications requiring readings down to 1/64 inch. It is sold individually and requires no special tools or accessories for immediate use out of the package.

Key Features

• Flexible blade conforms to curved or uneven surfaces for accurate contact measurement
• 4R graduation style provides four scales: 1/16, 1/32, 1/64, and 1/8 inch
• Black chrome-plated finish reduces light glare and improves scale visibility
• 0.0200 inch blade thickness allows flex without permanent deformation under normal use
• Horizontal scale orientation for straightforward left-to-right reading
• No hook included — clean end profile for butt-end and edge measurements

Compatibility

Designed as a general-purpose flexible steel rule suitable for standard layout and measurement tasks across trade and industrial applications. No specific tool system compatibility is stated for this part.

Installation Notes

No installation is required for this measuring tool. Store the rule flat or in a protective sleeve to prevent permanent bending or surface damage to the graduation markings. Avoid using the rule as a cutting guide with utility knives, as scoring the blade surface can degrade graduation legibility over time. Clean with a dry cloth after use in oily or wet environments to preserve the chrome-plated finish.