Abstract: A multi-purpose dressing system allows a person to carry their clothes to a gym or other place where changing is needed. A pouch has surfaces on the interior that function as a mat when the pouch is turned inside out. The surfaces of the pouch could be padded, waterproof or similar such material as would be conducive to standing in a gym.

Abstract: A diaphragm pump (1) in a gas detection instrument has an inlet (2) which is in fluid communication with a pump chamber (4), and an outlet (3) through which fluid in the pump chamber (4) can be expelled from the pump (1). A wall of the pump chamber (4) is formed by a circuit board 6 on an inner surface of which is mounted a pressure sensor (5) so as to be in fluid communication with the interior of the pump chamber 4 for detecting and monitoring the pressure of the gas passing through the pump chamber (4).