The Anton APM 130 Differential Manometer is a durable pressure measurement instrument that offers straightforward, hand held pressure & tightness testing. It comes equipped with a sturdy protective boot with tilt stand and a backlit display to encourage use in both difficult and dark conditions, as well as being a waterproof unit. The APM 130 is the ideal pressure instrument for let by / tightness testing, draught and differential pressure measurement with the advantage of a data hold function. This differential manometer will make light work of the varying IGE standards and is particularly useful for the installation of boilers. this turns on but hasn't been tested with other equipment.