Lufkin 623FTN Steel Rule 36 in Rigid Inch Graduation

Product Description

The LUFKIN 623FTN is a rigid steel rule designed for precise linear measurement in trade and industrial applications. The rule measures 36 inches overall length with a 1-1/4 inch width and a 0.0600 inch thickness, providing enough body to lay flat against a workpiece without flex. Graduations are marked in 1/16 inch and 1/8 inch increments in a horizontal inch scale. The polished steel finish improves marking line visibility and resists corrosion in shop environments. A hook is included for quick referencing against an edge or shoulder. This tool is appropriate for machinists, pipefitters, sheet metal workers, and general trade use wherever a rigid reference rule is needed.

The 623FTN is suited for layout and measuring tasks in residential and commercial construction, fabrication shops, HVAC duct work, plumbing rough-in, and general mechanical service. The rigid format makes it a reliable bench and field tool when a tape measure lacks the stiffness needed for accurate scribe lines or transfer measurements. The 36 inch length covers typical stud spacing, panel widths, and pipe run measurements in a single placement.

Key Features

• Rigid steel construction holds straight across the full 36 inch span
• Dual graduation increments: 1/16 inch and 1/8 inch on a horizontal inch scale
• Polished steel finish improves readability and resists shop corrosion
• Includes hook for shoulder or edge referencing
• Non-magnetic — will not attract ferrous chips or filings in machine shop use
• Compact 0.0600 inch thickness fits tight clearances and slots

Compatibility

Designed as a general-purpose rigid steel rule for trade and industrial measurement applications requiring a 36 inch inch-graduated layout tool.

Installation Notes

No installation is required for this measuring tool. Store flat or hang vertically using the hook end to prevent warping over time. Keep the rule clean and dry to maintain graduation legibility and finish integrity. Do not use as a cutting guide with rotary tools, as blade contact will damage the graduation markings.