Starrett 66008 Flexible Steel Rule 6 in 4R Graduation

Product Description

The STARRETT 66008 is a flexible steel rule designed for precision measurement in tight or contoured spaces. Finished in satin chrome plating, it reads clearly under shop lighting and resists glare. The rule is 6 inches long and 1/2 inch wide, with a thickness of 0.0200 inches, making it thin enough to slip into narrow gaps where rigid rules cannot reach. It carries 4R graduation, providing four scales: 1/16, 1/32, 1/64, and 1/8 inch. The horizontal scale orientation keeps readings consistent. This rule is a standard hand tool for HVAC technicians, plumbers, pipefitters, electricians, and other trade professionals who need accurate short-length measurements on the job.

The 66008 suits a wide range of trade applications where flexibility and readability matter. Its 6-inch length handles close-quarter measurements inside equipment enclosures, around pipe fittings, or along panel edges. The 4R graduation format is the most common specification requested in mechanical and electrical trades, giving the technician four increment choices without switching tools. The satin chrome finish reduces eye strain during repeated use. This rule fits comfortably in a tool pouch or shirt pocket and adds no significant weight to a standard tool loadout at 0.1 pounds.

Key Features

• Flexible steel construction bends to follow curved or irregular surfaces
• 4R graduation provides four scales: 1/16, 1/32, 1/64, and 1/8 inch on a single rule
• Satin chrome-plated finish minimizes glare and protects against corrosion
• 6-inch overall length with 1/2-inch width fits tight spaces and tool pouches
• 0.0200-inch thickness allows measurement in narrow gaps and slots
• Horizontal scale orientation for consistent, easy reading

Compatibility

Designed as a general-purpose flexible short rule suitable for measurement tasks in HVAC, plumbing, electrical, and mechanical trade applications where a 6-inch 4R-graduated rule is required.

Installation Notes

No installation is required for this hand measuring tool. Handle the rule carefully to avoid permanent kinking beyond its flexible design range, which can affect measurement accuracy. Keep the rule clean and dry to preserve the satin chrome finish and scale legibility. Store flat or rolled within its natural flex range to prevent set deformation over time.