General Tools 678MED Rigid Steel Ruler, 4R Graduations 150mm/6''

General Tools 678MED Rigid Steel Ruler

The General Tools 678MED is a precision measurement rigid steel ruler designed for engineering, machining, and technical inspection applications. Fabricated from polished stainless steel, this 6-inch (150mm) scale features highly legible ultra-fine black graduations to support precise linear measurements in both standard and metric units.

Key Features & Specifications

• Material: Polished stainless steel for durability and corrosion resistance
• Scale Length: 6 inches (150 mm)
• Width: 3/4 inch
• Graduation Standard: 4R
• SAE Graduations: 1/8, 1/16, 1/32, and 1/64 inch increments
• Metric Graduations: 0.5 mm increments (with reference markings at 10, 20, 50, and 100 mm)

Frequently Asked Questions

Q: What material is the 678MED ruler made from?

A: The ruler is constructed from polished stainless steel.

Q: What are the specific SAE graduations on this 4R ruler?

A: The 4R standard scale features ultra-fine black graduations at 1/8, 1/16, 1/32, and 1/64 of an inch.

Q: What are the physical dimensions of the ruler?

A: The ruler measures 6 inches in length and 3/4 inch in width.