We are dealing in Pressure Switches, which are the forms of switches which close up an electrical contact when a fixed fluid pressure has been compassed on its input. The switches may be configured to make contact either on pressure fall as well as pressure rise. These are widely employed in industry to mechanically control & supervise the systems that employ pressurized fluids. Utilized for sensing fluid pressure these are included with Bourdon tube, diaphragm or piston element, capsule, bellows etc. Provided with over-center mechanism such as a miniature snap-action these can also insure speedy procedure of the contacts. These render highly useful over-center characteristics and are adjustable, if contacts are moved or tension is adjusted with a counterbalance spring. Pressure Switches may have calibrated scale as well as pointers so as to display the set point of the switch.