I have set the scale to person 1 (me) but just does weight

Yes, you can calibrate the CAMRY Electronic Personal Scale EB9872 by following these steps:

1. Step on the scale and wait for the display to show "0.0".
2. Press and hold the "UNIT" button for approximately 5 seconds until the display shows "CAL" and "0.0" starts flashing.
3. Release the "UNIT" button and wait for the display to show "1000" and start flashing.
4. Place a weight of exactly 1000g on the scale and wait for the display to stabilize and show a reading.
5. Press the "UNIT" button again to confirm the calibration. The display will show "PASS" and then return to "0.0".
6. Remove the weight from the scale and it is now calibrated and ready for use.

It's important to note that you should use a weight that is known to be accurate, such as a calibration weight, to ensure accurate calibration. Also, it's recommended to calibrate the scale periodically to ensure accurate readings.

cheap scales do that,

some better scales of an autocalibration, mode, RTM
read the manual, google for it using its real name and model #
then read that see if it has that feature,
a 6% error, if the manual tells you scale is 5% accuracy that be normal. no scale told of 10,000 models sold world wide.

Taylor digital scale, Model # 5721F
Taylor electronic scales are designed to measure your personal weight, as well as your body fat and water weight. Your scale will measure in either pounds or kilograms, indicating your weight to the nearest ounce or gram. You can use the scale as a weight only device or you can take advantage of its bells and whistles by completing the programming process. The scale will store data for up to 10 users. Setup takes only a few minutes.
Set the scale to your choice of kilograms or pounds. The default measurement for the scale is pounds/inches. To change this setting, change the switch on the underside of the scale to kilograms.

I don't know specifically for this model, but for most like this, 300 or 330lbs is typical. To test a working scale for its max capacity, let a heavier friend try it or carefully hold a weight in each hand and stand very still when its a digital scale. A gallon plastic milk container weighs about 9lbs, so one in each hand,even if filled with water will give you an extra 18 lbs of testing room. You can also let the heavier friend or other person hold the weights to help you test the upper limits.

Current Instruction Manual for the HDM560 can be found here:

http://www.healthometer.com/Manuals/MANUALS/HDM560-05_43_41816518.PDF


For resetting it would be similar to the initial setting process. FOLLOW these steps:

Lift display cover. Push "SET" button at bottom of pad. User "1" and "2" will appear.
User "1" will start blinking. Press the "USER" button to choose user "1" or "2". Once selected, press "SET" button to lock in information.
Both "HEIGHT" and "AGE" will appear on the screen. The "HEIGHT" will start blinking. Press the "UP" or "DOWN" arrows to find the correct height.

After entering height, press the "AGE" button. Use the "UP" and "DOWN" arrows to enter correct age and press "SET".

Both "MALE" and "FEMALE" images will be displayed. Press the "GENDER" button until the correct MALE/FEMALE image blinks and then press "SET". This will lock in the information.
Your correct information including User, Height, Age, and Gender will be displayed. Now you are ready to calculate weight.

Tap your person "USER" number (1 or 2) in center of scale with your toe. Your personal profile will appear. Wait until "000" appears. Stand on scale so bare feet are positioned over silver pad surface. "000" will blink your weight for approximately 3 seconds. "BF" will flash and body fat percentage will appear. The scale will turn off automatically in a few seconds.

After stepping on the scale to Activate your number (1-4), hold it down and it will say "reset" or (something to that effect), then Yes, or tap it once and it will say "no". If you want to reset, when it says "Yes", continue to hold it down, and it will then reset to zero.

you have 4 button on this model
1 tap the scale to start, it show 0.0
2 tap set to set person and height, age ...( use set, up, down buttons )
done
when start use
1 tap scale to start , show 0.0 again
2 tap user again and again to choose your user
3 wait after it show your height, age, then it show 0.0 step on the scale and you're done.
i've been through becuase my friend lost his instruction manual.
Now it wook
Have Fun
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Tanita UM Series Body Fat / Hydration Monitor InstructionsTanita UM Series Body Fat Monitor/Scale Instruction Manual

How to Determine Body Fat Percentage
Setting & Storing Data in the Memory
1. Turn the power on using the set button.
2. Select a Personal data number using the Up/Down arrow buttons, then press set.
3. Select your Age using the Up/Down arrow buttons to scroll through numbers, then press set.
4. Select Male or Female using the Up/Down arrow buttons, then press set.
5. Specify the Height using the Up/Down arrow buttons, then press set.
The unit will beep twice and the display will flash all data (Male/Female, Age, Height) to confirm the programming. The power will shut automatically, or you can tap the weight only button (in front of monitor) for quick shut off.
How to select Personal Data Number
1. Press the Up memory button to turn on.
2. Use the Up/Down arrow buttons to select your personal data number, then press set.
3. The unit will beep and the display will show the programmed data.
4. The unit will beep again and the display will show '0.0' and then step on the platform.
5. Your weight will show first, then "00000" will appear and then your Body Fat Percentage will appear on the display.
Programming the Guest Mode
1. Press the Down Guest button to turn on
2. Follow the same steps for programming as outlined above.
3. The unit will beep twice and show '0.0', then Step onto the platform.
Taking Weight Measurement only
1. Select weight only mode, by toe-tapping the weight only button located at the base of the scale.
2. Wait for the scale to display ‘0.0', then step on.
Replacing the batteries
1. When the "Lo" error message appears on the screen, the batteries need to be replaced.
Understanding Your Readings
Healthy Range Indicator
(Please note this function is only applicable on adult mode, as no standard healthy ranges have been established for children and athletes.)
Your body fat monitor/scale instantly compares your body fat reading to the healthy range chart. Following your body fat reading, a black bar will flash across the bottom of the display, identifying where you fall within the body fat ranges for your age and gender.
(-): Underfat; below the healthy range. Increased risk for health problems
(O): Healthy; within the healthy body fat percentage range for your age/gender
(+): Overfat; above the healthy range. Increased risk for health problems
(++): Obese; high above the healthy body fat range. Greatly increased risk of obesity related problems.

I got it! Press "set". You should see "start goal" in the bottom right. Press the user # you want to save as and press "set" again. The display will blink then display "0.0". Step on the scale to get your current weight. Once it's read you current weight, press "set". A goal weight will display. Press "User 1" to make your goal weight go up and "User 2" to make it go down. Press "set" when the display shows your goal weight. That's it. Now all you have to do is press your user # and wait for "0.0" to display before stepping on the scale.