Starrett 51349 Flexible Steel Rule 18 in 5R Graduation

Product Description

The STARRETT 51349 is a flexible steel rule designed for precision layout and measurement tasks across fabrication, plumbing, HVAC, and general trade work. Measuring 18 inches in overall length and 3/4 inches in overall width, this rule carries a 5R graduation pattern, which provides three scales on a single rule: 1/100 inch, 1/32 inch, and 1/64 inch. The satin chrome-plated finish reduces glare under shop lighting and resists corrosion during regular use. At 0.0200 inches thick, the blade is flexible enough to measure curved or irregular surfaces without losing reading accuracy.

This rule is suited for residential and commercial trade applications where close-tolerance layout is required. HVAC technicians, plumbers, pipefitters, and sheet metal workers use flexible rules to take measurements in tight or non-planar areas where a rigid rule cannot conform to the surface. The horizontal scale orientation supports direct reading in standard left-to-right layout work. The silver satin chrome finish keeps graduations legible over the life of the tool.

Key Features

• Flexible steel blade conforms to curved and irregular surfaces
• 5R graduation provides 1/100, 1/32, and 1/64 inch scales on one rule
• Satin chrome-plated finish reduces glare and resists corrosion
• 18 inches overall length with 3/4 inch width for stable handling
• 0.0200 inch blade thickness for flex without distortion
• Horizontal scale orientation for straightforward left-to-right reading

Compatibility

Designed as a general-purpose flexible steel rule suitable for layout and measurement tasks in HVAC, plumbing, pipefitting, sheet metal, and related trade applications.

Installation Notes

No installation is required for this measuring tool. Store the rule flat or rolled in a dry location to prevent permanent set or corrosion. Avoid using the rule as a cutting guide with utility knives, as this can damage the graduated edge and reduce measurement accuracy. Clean the blade with a dry cloth after use in wet or corrosive environments.