Humboldt H-3250 Length Comparators - Manual (Page 7)

Basic Operating Instructions
Please refer to figure 2 for the instructions below:
ON/OFF:
To turn Indicator On: Press ON/clr and release when clr appears.
To turn Indicator Off: Press and Release OFF
CLEAR:
To Clear Display to zero: Press and Release On/clr
HOLD:
To Turn Max. Hold On/Off: Press and Release HOLD
INCH/MILLIMETER:
To change from inch to millimeter, or millimeter to inch:
Press and hold 2ND until 2nd appears on bottom of display and
then release. Press and release within 5 seconds.
NOTE: MM for millimeter and IN for inch will appear on
bottom of display.
TRAVEL REVERSE:
To change Travel Direction of Reading: Press and hold 2ND until 2nd
appears on bottom of display and then release. Press and release
HOLD within 3 seconds. NOTE: Arrow under measurement mode
will show positive direction of spindle travel.
AUTO OFF:
To turn AutoOff on or off: Press and hold 2ND until 2nd appears on
bottom of display and then release. Press and release OFF within 3
seconds. NOTE: An hour glass will appear on left side of display if
AutoOff feature is active.
CHANGING RESOLUTION:
To change resolution:
Press and hold 2ND until 2nd appears on bottom of display and
then release. Press and release ON/clr within 3 seconds.
Press and release HOLD within 3 seconds
NOTE: A # will appear in the right side of the display. 1 = .0005;
2 = .0001; 3 = .00025; 4 = .0005; 5 = .001
Press and release CHNG until desired # is displayed
Press and release CHNG and 2ND simultaneously to save
NOTE: Resolution can only be changed to a courser resolution
than the base gauge as purchased.