KEYPAD AND DISPLAY
3. Keypad and Display
1. Low display (current measurement)
2. Hold (measurement paused)
3. Wheel operation (also shows addition of radius / diameter)
4. Battery low (with normal display <2.6v, shown along <2.4v)
5. Error (measurement overflow or invalid operation)
6. Upper display (memory contents or area)
7. Units of upper display
8. Current memory location
9. Shift (when shift key held down)
10. Unit of lower display
KEY FUNCTIONS
Power On / Off
Turn the digital wheel On. To turn it OFF, press the key again.
The unit of measure will be preserved along with any memories.
However, the measurement in progress will be cleared.
Shift
Holding the shift button down enables the second function of
each button (printed yellow-on-blue).
Hold I Contrast Up
Puts the digital wheel in and out of "Hold" mode. "Hold" allows
wheel to be moved without increasing or decreasing the current
measurement. Second function: Holding the shift button down
and pressing this button increases the display contrast.
Unit / Contrast Down
Changes the unit of measure. Converts the current measurement
to the selected unit. Second function: Holding the shift button down
and pressing the button decreases the currently displayed memory.
Clear / Memory Clear
Clears the current measurement from the display, preparing unit
to begin a new measurement.