
American Weigh Scales, Inc.
MC-Series
D i g i t a l P o c k e t S c a l e
MC-100 (100x0.01g)
MC-500 (500x0.1g)
User Manual

MC-Series Manual
Thank you for purchasing the American Weigh MCSeries digital pocket scale. Please read all operating
instructions carefully before use. Scales are precision
instruments and should always be handled with proper
care. To ensure years of reliable service, keep these
simple tips in mind:
• Do not exceed the scales maximum capacity.
Overloading your scale can permanently damage it!
• Avoid exposure to extreme heat or cold. Scales
perform best at normal room temperature. If
temperatures have changed dramatically, recalibration
may be necessary.
• Allow your scale to warm up for 30-60 seconds
before performing calibration (if available).
• Store your scale in a clean, dry location. Dust, dirt,
and moisture can accumulate on the weighing sensors
and electronics causing innacuracy or malfunction.
• Avoid using your scale in close proximity to strong
radio wave emitting devices such as computers, cash
registers, and cordless phones.
• Always weigh on a at and level surface, free from
vibrations and drafts. The corner of a room is usually
the most stable.
• Gently apply all items to be weighed. Do not drop
items onto the weighing platform.
• Avoid dropping your scale. The warranty does not
cover damage due to rough treatment or overload.

I. SCALE OPERATION
Place the scale on a horizontal at surface.
1. Press the [
2. Wait until “0.0” or “0.0” is displayed.
3. Place the object(s) on the weighing platform.
4. By pressing the [ M ] key, you can switch between
weighing units.
5. The removable covers can also be used as
weighing trays.
6. To turn the scale off, press and hold the [
II. TARE WEIGHING
1. Turn on the scale as described above.
2. Place a tray or container on the scale platform.
3. Press the [ T ] button. “0.0” will be displayed.
4. You can now add items to the container or tray to
obtain just the weight of the contents.
5. When the container is removed, a negative number
will be displayed. Press [ T ] again to zero the scale.
III. CALIBRATION
This scale has come pre-calibrated at the factory. Only
re-calibrate if you are experiencing trouble weighing.
1. Turn on the scale as described above.
2. Press and hold the [ M ] until the display shows
“CAL”.
3. Make sure nothing is on the platform and press the
[ M ] key once again.
4. The display will ash “CAL” followed by the required
calibration weight (500.0g).
] key to turn the scale on.
] key.
MC-100 uses a 100g calibration weight
MC-500 uses a 500g calibration weight

5. Place the required weight (not included) on the
center of the platform.
6. The display will show “CAL” then “PASS”.
Calibration is complete! You can turn off the scale.
IV. TROUBLESHOOTING
The primary reasons for inaccuracy or malfunction
are low batteries, incorrect calibration, overload or
operating on an unstable surface. Please keep this in
mind and maintain and operate your scale properly.
This scale is a precise instrument and must be
handled with the utmost care and caution.
[Display] Elimination of errors
[Lo] Change the batteries.
[OUE2] Recalibrate the scale as shown above.
[O_Ld] You are overloading the scale. Remove the
excessive load immediately!
[UnST] Use the scale in a more stable position

Power
Warranty
2 x AAA Batteries (included)
10 Year Warranty
Scale Dimensions (inches)
2.2” Ø Stainless Steel
4.6 x 2.2 x 0.8” (open)
100g 500g
eighing Units
g, oz, ct, gn g, oz, ozt dwt
W
Calibration Weight (not Included)
Platform Dimensions (inches)
Resolution 0.01g / 0.001oz / 0.05ct /
Model MC-100 MC-500
Capacity 100g / 3.528oz / 500ct /
1543gn
0.15gn
500g / 1.64oz / 16.08ozt /
0.1g / 0.01oz / 0.01ozt /
321
0.1dwt
.5dwt
Specications