The Fowler 54-225-555-0 Xtra-Value Depth Gage has a measurement range of 0 to 16"/405mm, resolution of 0.0005"/0.01mm, with ±0.001"/0.02mm accuracy. The LCD screen displays in inch, metric, or fractions (in 1/64" increments). The gage includes five measuring rods, a spring-loaded spindle with a hold function for ease of use and accurate measurements. Depth gages are typically used in manufacturing, machining, and mechanical engineering. This product has a 1-year warranty offered by Fowler High Precision. Fowler, an American company, manufactures inspection and measurement instruments such as electronic indicators, calipers, bore gages, and micrometers. The company, founded in 1946, is headquartered in Canton, MA.