My apologies if i was clear...i making a manometer, and basically have a made a wheat stone bridge to mimic my transducer so that i dont screw my ($100 :() transducer up. And im adding a differential opamp in front for some gain but also with offset capabilities, so that i can adjust a pot to zero that display if it drifts. Im then feeding it to 3 opamps which will have gain to represent the 3 settings that i want to switch to (PSI, mmHG, and Kpa). Im just having difficulties on making the gain/offset circuit that is feed from the transducer, so basically looking for offset/gain circuits. Thanks for your time.