TES-135 Color Meter 1).Check the color difference between two ... Tolerance function 3).Auto memory (99 sets) & RS-232 TES-135 Color Meter + Promoting Item & Free ShippingCheck the color difference ... two samples. Color difference displayed Δ(L*,a*,b*) Δ(E*ab,C*ab, H*ab) Δ(Y, x, y) Δ(X, Y, Z) or Δ(Rs ... :Approx.f2mmDisplay modes:Color differenceΔ(L*,a*,b*), Δ(E*ab,C*ab, H*ab),Δ(Y, x, y), Δ(X, Y, Z) or Δ(Rs, ...