I'm looking for a differential air pressure sensor, one that has a sensitivity of 1" H20 full-scale and is also small. The only ones I have been able to find are from All Sensors Corporation, and cost $88 from Digi-Key. Does anyone know of a cheaper source? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist