Cool! Can you incorperate a gauge or something to indicate "Measurement". My companies focus is in the oilfield but our skills can be used in many different industrial industries.
Good job on 25 with the shading for a more 3D effect. 24 does not appeal to me as much with the bright orange and light blue. 25 definitely takes the cake.
A little bit too colorful. I would lean more toward 57 then 58. Do you have other designs or ideas to use? Think of an instrument panel (Like the dashboard of an airplane).
Looking good. Could you please try crossing the "T" (the top horizontal line) in "DT" with the "red pointer", so they are one? (Maybe you'd have to put the red pointer on more of an angle or an italicized font?) Perhaps in the blue or black colour? Thank you.