... their reliability, sturdiness and low cost .The wide range of YADA bimetals ,manufactured to DIN standards ASTM ... distinguished,which coincide with the linearity range.For such a range, bimetal types YDTB1578,YDTB20110 are most ... temperature variations, small spaces,etc.For such a range, bimetal types YDTB1578,YDTB20110 areMost suitable. YDTB1578 ... mark the other marking. bimetal thermometer (iron)