Hi! Im measuring how much wood expands in different temperatures using a strain gauge. do i need to use a wheatstone bridge circuit schematic? or else how do i heat up the wood without spoiling the strain gauge. Actually how will i heat up the wood anyway? Also how would i draw a diagram to show the apparatus? and how do you attach the strain gauge to the wood- is it with ps adhesive? Your help is much needed and very much appreciated if you know. thanks.