ERT 300, placement questions

Question for anyone who uses a ERT 300.

On most racquets I can place the reader's hooks just fine with the machine aligned vertically as so the DT reading is oriented correctly when you hold the racquet by the throat in front of you. However, on some string patterns the machine doesn't fit right and it forces me to turn it horizontally to make it hook on.

The question is with the change in orientation of the reader (horizontal vs. vertical) does this affect the DT reading?
 
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