Product Info Catalog Tools Hand Levels & Measuring Slide Caliper, Stainless Steel, 4-In. Slide Caliper, Stainless Steel, 4-In. Request a Quote UPC: 38728425812 SKU: 847889 Model Number: 729 4" stainless steel slide caliper, with inside & outside readings in 16ths & 32nds, decimal equivalents table on back, 4" capacity.