A&D Digital Scale SK-1000WP - Manual (Page 7)

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Calibration by Gravity Compensation
If you have calibration weights at the capacity of the scale, you can
calibrate the scale with the weights instead of compensating for the
gravity acceleration.
The scale is calibrated at 9.798 m/sec
2
at the factory. If the gravity
acceleration at your location is not the same, calibrate the scale by
compensating for the gravity acceleration. (See “The Value of
Gravity at Various Locations” and “World Map” and find your location
value.)
1. Enter calibration mode.
Press the [ON/OFF] key to turn the power off. While pressing both
the [RE-ZERO] and [UNITS] keys, press the [ON/OFF] key. Then,
Cal will be displayed.
2. Select a digit to be changed.
Press the [UNITS] key. The previously set value, for example 979,8 ,
will be displayed. A digit after the comma “,” will be changed by
pressing the [RE-ZERO] key. Press the [UNITS] key to move the
comma “,” and select a digit to be changed.
3. Set the new value.
Change the value of the gravity acceleration using the [RE-ZERO]
and [UNITS] keys.
4. Save the value in memory.
Press and hold the [UNITS] key until end is displayed. The scale
will automatically return to the weighing mode.