The KA Piston Selector Switches are specially manufactured for adjustable piston combinations. The main moulded body is fitted with double sided contacts of nickel silver, with 'On'  'Off ' and neutral positions. The switch is available in four colours and will bank up to 3/8" pitch to give the ideal spacing of fascia panel engraving. They are mounted on special 'Tee' section aluminium which can be supplied as a separate item