Starrett 56466 Steel Rule 3 Inch 4R Rigid

Product Description

The STARRETT 56466 is a rigid steel rule designed for precise layout and measurement work in trade and shop environments. Manufactured from spring steel with a satin chrome-plated finish, this rule measures 3 inches in overall length and 9/16 inches in overall width, with a thickness of 0.05 inches. The 4R graduation style provides four scales in a single tool: 1/16, 1/32, 1/64, and 1/8 inch graduations. The horizontal scale orientation and rigid construction make it suitable for machinists, pipefitters, electricians, and HVAC technicians who need a compact, dependable reference rule for close-quarter measurements.

This short-format rule is well suited for bench work, parts layout, and inspection tasks where a full-length rule would be impractical. Its compact 3-inch length fits easily in a tool pouch or apron pocket, making it a practical carry item for field technicians. The satin chrome finish reduces glare under shop lighting, improving readability of fine graduation lines. It ships as a single unit and is appropriate for both individual tradespeople and shop tooling inventories.

Key Features

• 4R graduation style with four scales: 1/16, 1/32, 1/64, and 1/8 inch
• Rigid spring steel construction resists flexing during measurement
• Satin chrome-plated finish reduces glare and improves scale contrast
• Compact 3-inch length suited for tight-space and bench layout work
• Horizontal scale orientation for consistent left-to-right reading
• Non-magnetic, no hook included — straightforward layout rule

Compatibility

Designed as a standard short-format rigid steel rule for general trade measurement and layout applications across mechanical, electrical, and HVAC disciplines.

Installation Notes

No installation is required for this hand tool. Store the rule in a dry location to prevent corrosion of the spring steel substrate beneath the chrome plating. Avoid using the rule as a straightedge for scoring or cutting, as blade contact can damage the graduation markings. Inspect graduation lines periodically for wear, particularly in high-use shop environments.