Murphy also has mechanical gauges and SWICHGAGEs, http://www.fwmurphy.co.uk/products/pressure_vacuum/pressure_vacuum_engine_gauge.htm. SWICHGAGEs have electrical contacts which contact the gauge needle at an adjustable setting. They are good for alarms. A special SWICHGAGE measures liquid levels. Kathy K has one which sets off an alarm when the engine coolant level is too low and others for coolant temperature, oil pressure and fuel line vacuum. Phil Keys Kathy K Willard 36, hull #34 FOR SALE Port Hadlock, WA 98339 philm@keysfamily.org

Phil Keys <philm@keysfamily.org> writes: >SWICHGAGEs have electrical contacts which contact the gauge needle at >an adjustable setting. They are good for alarms. I used these on Island Eagle. I would highly recommend them. They're cheap as well -- about $35 apiece for temperature and pressure. Scott Welch FirstClass Product Manager www.firstclass.com Those who make no mistakes rarely make anything.