Amazon.com: Tire Tread Depth Gauge, Preciva LCD Digital Tire Tread Depth Gauge Tool with Inch and MM Conversion of 0-0.98 Inches(NO Fraction Display/NO 32nds). : Automotive
2'' 52mm Waterproof Depth Gauge Digital Depth Meter for Marine Boat Yacht 9-32V | eBay
INSIZE, 0 in to 12 in Range, +/-0.002 in Accuracy, Dial Depth Gauge - 55VM79|2341-2E2 - Grainger