Four active gages in uniaxial stress field - two aligned
with maximum principal strain, the other two with transverse
"Poisson" strain (column).
Units for load and dimensions
must coincide with those for elastic modulus.
Load (lbf, etc.),
Elastic Modulus (lbf/in 2 , etc.),
Poisson's Ratio (nondimensional),
Width (in, etc.),
Thickness (in, etc.),
Gage Factor (nondimensional),