I have a supreme weigh sw02 digital pocket scale i need to calibrate and need help

To calibrate a digital scale, you will need to follow these steps:

1. Find a weight that you know the exact weight of, such as a coin or a small weight. This weight will be used to calibrate the scale.
2. Place the weight on the scale and wait for the scale to stabilize.
3. Check the weight displayed on the scale. If it is not accurate, use the scale's calibration function to adjust the scale to the correct weight.
4. To calibrate the scale using the calibration function, follow the instructions in the user manual for your specific scale. The process may vary depending on the make and model of the scale.
5. Once the scale is calibrated, remove the weight and test the scale by weighing an object of known weight. If the scale displays the correct weight, the scale is properly calibrated. If the scale is still not accurate, you may need to repeat the calibration process or consult the user manual for further instructions.

I hope this helps! If you have any further questions, don't hesitate to ask.

Because you have a scale that weighs in whole grams not parts of a gram. You need a more accurate scale like these which weigh to 1/00th of a gram (0.01 grams).

https://www.walmart.ca/en/ip/fashionhome-500g-0-01g-Weigh-Gram-Scale-Digital-Jewelry-Pocket-Scale-Backlit-Display-Tare-Function-Food-Weighing-Tool/531FGVNPN850

..

US nickel coin weights 5 grams

Mostly only a certified weight will weigh exactly 1kg and most other goods purporting to weigh 1kg will actually weigh that amount plus or minus a tolerance, depending on the goods.

The suitability of something to calibrate a scale with will depend entirely on how accurate the calibration is to be. I think 1 litre of water at room temperature weighs 1kg but I suggest you take advice about that.

You can use the weight of coins to calibrate the scale. Since I don't know where you are here are some examples.
use the newest cleanest ones you can as they do wear and change slightly

http://www.usmint.gov/about_the_mint/?action=coin_specifications
http://www.royalmint.com/discover/uk-coins/coin-design-and-specifications

Calibrating a digital pocket scale like the Mega Weigh MGP-1014 ensures that it provides accurate measurements. Here are the general steps for calibrating such a scale:
Note: It's important to refer to your scale's user manual for specific instructions, as calibration methods can vary between different models.
What You'll Need:

• Calibration weights (these are weights with known, precise values)
• The Mega Weigh MGP-1014 scale
• A clean, stable surface for calibration

Steps:

1. Read the Manual: Familiarize yourself with the user manual that came with the scale. It should provide specific instructions on how to calibrate the scale.
2. Clean the Scale: Ensure that the scale's weighing platform is clean and free from any debris. This helps to prevent interference with the calibration process.
3. Power On: Turn on the scale and wait for it to stabilize, displaying "0.0" or the default reading.
4. Tare (Optional): If your scale has a tare function, you can use it to zero out the weight of any container you plan to use to hold the calibration weights. Place the empty container on the scale and press the tare button.
5. Select Calibration Mode: Many scales have a calibration mode that you need to access. Refer to your user manual to determine how to enter the calibration mode on the Mega Weigh MGP-1014.
6. Add Calibration Weight: Place a calibration weight of a known value onto the scale's platform. The weight should match the unit of measurement you plan to use (grams, ounces, etc.).
7. Calibration Procedure: Follow the specific instructions provided in the user manual to initiate the calibration procedure. This usually involves pressing buttons or following on-screen prompts. The scale will often ask you to confirm the weight value of the calibration weight you added.
8. Confirm or Adjust: The scale should display the weight you added as the calibration weight. Confirm that the displayed weight matches the known value of the calibration weight. If there's a discrepancy, follow the manual's instructions to adjust the calibration setting accordingly.
9. Repeat if Necessary: Some scales require calibration with multiple weights to ensure accuracy across the scale's entire range. If this is the case, follow the manual's instructions for using additional calibration weights.
10. Exit Calibration Mode: Once you've completed the calibration procedure, exit the calibration mode according to the instructions provided in the user manual.
11. Test with Known Items: After calibration, test the scale's accuracy by weighing objects of known weight to ensure that it's providing accurate readings.

Remember that the exact calibration process can vary depending on the scale model, so always refer to the user manual for the most accurate instructions. If you're unsure about any step, it's recommended to contact the manufacturer's customer support for assistance.

If you don't have the measured weights that sometimes come with scales or can be purchased individually, I'd recommend using a United States nickel/5 cent coin. They are supposedly an exact 5 g's each, and a Volt-100 scale requires 100 g's for recalibration. Therefore, you can recalibrate your scale using 20 nickels. I also use a Volt-100 and so far this has worked for me exactly; the most it's ever been off is .02 g, which is basically nothing.
What you do is remove your batteries, (I'd replace them with brand new ones if you have the option) then place the scale on a completely smooth, perfectly level, flat surface. Power the scale on, make sure it is reading 0.00, hold the M (mode) button until CAL comes on the screen, release the button for a quick second, then press it again one more time (quickly, don't hold this time), and then wait until "100.00 g" is flashing on the screen. Then you're going to place your 20 nickels on the scale as smoothly and with as little jostling or movement as possible. After a moment, the screen should read out "PASS". You then power the scale off (don't weigh anything before turning it off as it can possibly adjust the calibration you just set or weigh out heavily or light) and to test out your newly calibrated scale, turn it back on and weigh one nickel. It should be exactly 5 g's, with no more than a .02 digression in either direction if done properly. Good luck!

I recommend you look in your local yellow pages for a scale company. Calibration is very easy to do, but we recommend that you bring the scale to a local scale company. All unit sold by Precision Weighing Balances are factory calibrated and should provide you trouble free weighing for many, many years.

magnum 1000xr pocket scales turns on calibrates goes to different modes but wont show the weight when object placed on the scale,a lock appears in top left of window, is scales broke or do i have to make lock symble dissappear?