Used for test and validation, its manufacture is continuously monitored to assure uncompromising standards and material integrity. An ideal choice for satisfying most applications and installation requirements needing highly-reliable precision instruments. The standard Ashcroft test gauge case style features a solid-front aluminum case with a hinged ring. The dial has a polished mirror band for pointer reflection to prevent parallax error and is available in 4.5", 6" and 8.5" dial sizes in both lower and back connection. Pointer is a balanced-friction adjustable design with red knife edge tip for easy reading.