Product Info Catalog Tools Hand Levels & Measuring MM 48" ALU Ruler MM 48" ALU Ruler Request a Quote UPC: 52088876756 SKU: 162994 Model Number: 162994 Master Mechanic, 48", Aluminum Ruler & Straight Edge, High-Grade Lightweight Anodized Aluminum Alloy Body, Highly Visible Graduations In 1/8" & 1/16", Easy To Read Marking.