This Starrett Dial Depth Gage is a top-quality tool for measuring the depth of a workpiece. With a range of 0-3 inches and a precision of 0-100 Dial Indicator, it is perfect for metalworking applications. The gage type is a depth gage and the brand is Starrett, which is known for its reliability and durability. The model number is 644JZ and it is manufactured in the United States. This depth gage is a must-have for any metalworking professional who wants to ensure accurate and precise measurements. It is suitable for use in various industries and is an essential tool for anyone who wants to achieve the highest level of accuracy in their work.