American Weigh Scales AMW-55 - Manual (Page 3)

I. OPERATION
Place Scale on a horizontal flat surface.
1. Press [ON/OFF] key.
2. Wait until "0.0” is displayed.
3. Put the object(s) on the weighing platform.
4. Using the [MODE] key, you can switch between the
weighing units.
II. TARE WEIGHING
1. Turn on scale as described above.
2. Place the "tare item" on the platform.
3. Press [TARE] and wait until "0.0" is displayed.
4. Add the "net-weight-item".
III. CALIBRATION
Calibration is NOT required before first use. Only
calibrate if scale is not weighing properly.
**Make sure you use the correct calibration weight for
your scale or the calibration will not be accurate**
AMW-55: 50g calibration weight
AMW-100: 100g calibration weight
AMW-250: 200g calibration weight
AMW-550: 500g calibration weight
Calibration Procedures for AMW-250 & AMW-550
1, Turn OFF the scale, press and hold the [CAL] key and then
press [ON/OFF] shortly. After 1-2 seconds, the scale will display
a random number. Now release the [CAL] key.
2, Wait 2 seconds and press [ON/OFF] key again shortly.
3, The LCD display will read “2ero” followed by the amount of
weight required to calibrate (listed above).