Humboldt H-1240D.4F Digital Penetrometer with Digital Automatic Timer - Manual (Page 4)

3. Measure the travel of the plunger assembly by lowering the digital indicator
spindle to contact the plunger and observing the indicator reading.
4. Upon conclusion of the test squeeze the lever to release the plunger and
raise it and the indicator spindle. To reset the instrument for the next test,
the front panel toggle switch must first be flipped to the down position, then
the above sequence can be repeated with the indicator on, but the ON/clr
button must be pressed to reset the zero position reading to .0.
Note: DO NOT Change resolutions and inch/millimeter functions on the
digital indicator. They are not active, but doing so can result in
requiring the indicator to be reset. The digital indicator will turn off
if not used for 10 minutes when battery powered. A power adapter is
available to provide continuous power if preferred
H-1240D.2
H-1240D.50
H-1240D.1
H-1240D Parts
(Parts which do not appear on the H-1240 Drawing on the following page.)