Spi 13-935-2 Steel Rule 12 Inch 4R Satin Chrome

Product Description

The SPI 13-935-2 is a 12-inch steel rule machined from tool steel and finished with a satin chrome plating for reduced glare and corrosion resistance. It carries a 4R graduation pattern, providing four scales in one rule: 1/16, 1/32, 1/64, and 1/8 inch. At 1 inch wide and 0.0400 inches thick, the rule lays flat and stays rigid during layout work. A hook end is included for referencing from an edge without slippage. Machinists, toolmakers, fabricators, and quality control technicians use this rule for precision linear measurement in shop and field applications.

The SPI 13-935-2 is suited for horizontal-scale reading in metal fabrication shops, machine shops, welding operations, and general manufacturing environments. The 4R graduation style makes it a standard choice when a single rule needs to cover the most common fractional inch increments. The satin chrome finish reduces glare under shop lighting, improving readability during repetitive measurement tasks. It is appropriate for both bench use and hand-carry in tool bags or apron pockets.

Key Features

• 4R graduation: four scales on one rule — 1/16, 1/32, 1/64, and 1/8 inch
• Tool steel construction for rigidity and long service life
• Satin chrome-plated finish reduces glare and resists corrosion
• Hook end included for positive edge referencing
• Horizontal scale orientation for consistent left-to-right reading
• Slim 0.0400-inch thickness lies flat on workpieces and drawings

Compatibility

Designed as a standard 12-inch steel rule for general-purpose precision layout and measurement in metalworking, fabrication, and inspection applications.

Installation Notes

No installation is required for this measuring tool. Store the rule in a protective sleeve or case when not in use to prevent edge damage and surface scratching that can degrade graduation readability. Avoid using the rule as a straightedge for scoring or cutting, as this will damage the graduated markings. Clean with a dry or lightly oiled cloth to maintain the chrome finish.