A feeler gauge is a tool used to measure small gaps or spaces, such as those found in engine parts or other machinery. It consists of a handle and a set of thin metal blades of varying thicknesses, which can be inserted into a gap to measure its width. Feeler gauges are commonly used in automotive and mechanical applications to check clearance between parts and diagnose problems.
The YT-7220 feeler gauge is likely a high-quality tool made of durable materials such as stainless steel or hardened steel. It may have a variety of blade sizes to suit different measurement needs, and may also have features such as a comfortable handle or a lockable blade holder for ease of use. The gauge may come in a protective case or pouch for storage and transport. In terms of specifications, the YT-7220 feeler gauge may have a range of blade thicknesses, a specific blade count, or other unique features.