2, completely immersed in water, don't let the water overflow, and then draw the water scale.

3. Get out of the bathtub and shake off the water.

4. Add water to the second scale.

5, prepare a cup or bottle with a known volume, mineral water, drinks and other bottles have capacity.

6. Pour the water out of a bottle and fill it every time, and record how many bottles are filled.

7. Pour times * bottle volume (ML)/ 1000ML= weight (KG).

The weight of 1g varies from item to item. There may be several ways to measure it:

1, taking crystal as an example:

1g crystal, pinch a little with two fingertips to get1g.

2. Take water as an example:

1g water, one drop is1g.

3. Take movies as an example:

1g flaky articles, both of which are1g.

4. Take powder as an example:

1g powder, small nail 1/2 is1g.

5. Take the semi-curing class as an example:

1g semi-cured articles, the length of the first joint of the index finger is generally1g.