Martel Electronics 235 - Manual (Page 23)

numeric keypad and then press ENT. If the closest you could get to the
desired value was 9,950 GPM, you would enter this value and press
ENT.
It is possible for an instrument to be configured for both Manual input
and Manual output. An example might be a glass thermometer that is
to be calibrated in a temperature bath. In this case the calibrator will
first prompt for the user to set the external output and then prompt
the user to enter the external input.
Operation
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