1a. Using your One Gram Poise, obtain 10 ( 1990 or higher date ) pennies. Check to see if each one weighs 2.5 grams, place them in a small sandwich bag and label the bag.

1b. Now, take the weight of the one paper clip that you will be using. 1 paper clip = _____ g

1c. Now, measure about four inches of Bell wire and record its weight. 4 in bell wire = _____g

1d. Now, try to figure out how much Bell wire would come closest to one paper clip. That is the length that you will be using, when you will see the word Bell wire mentioned.

1e. Now, remove your One Gram Poise, place it into a separate small plastic bag, for safe keeping, and with a fine marker draw two lines to indicate where the SS ( Small Sleave ) was needed to balance the One Gram Poise. This will save you time, when you have need of the One Gram Poise. I would strongly suggest in making a new Sliding Poise ( SP ) for the Ten Gram Poise. If you want to keep the old Sliding Poise from the One Gram Poise, then the least that you can do is remove the square paper clip, that hangs down from the Sliding Poise, and save it and its contents in a small plastic bag, for future use.

2. Make a new square paper clip that hangs down from the Sliding Poise. You will have to modify the square paper clip, in the following manner. Holding the square paper clip in your hand, by itself, now bend the smaller piece, backward, and the end upward, so that the end and the main part of the paper clip are parallel to each other. To look something like this; |_| because it will act as a hanger for nuts, washers, paper clips and a small piece of bell wire. See the above diagrams, such that the weights added will be perpendicular to the Beam, not shown in the diagrams. ( In the diagrams the weights added are parallel to the Beam. )

3. Place Four 2.5 gram pennies into the left cup, and now move the poise a few hairs beyond the 10.0 gram ( cm ) mark on the metric strip. In my case it took two fairly large nuts, five washers, and one paper clip. There is no way of knowing what size nuts you will find or use, or what size of washers you will end up using. You want to move the poise a few hairs beyond 10.0 gram ( cm ) mark. And add your nuts, washers, and paper clips until it seems to be balanced. Now, remove the four pennies, from the cup and zero adjust the balance, by moving the poise to the 0 gram mark, and adjusting the SS ( the Small Sleeve ) ( See section on adjusting the SS using your thumbs on both sides of the SS ) By giving the Beam a slight tap with a pencil or a pen, to allow the pointer to go pass the Plum line just as far to one side as it goes to the other side.

4. Now, remove the last paper clip you added and replace it with a four inch piece of Bell wire or your equivalent amount that equals one paper clip. ( Small gauge copper wire, covered with plastic covering. )

5. Now, move your Poise to exactly to 10.0 gram ( cm ) mark, replace your Four 2.5 gram pennies, and try to balance the SSB, you will have to cut sections from the Bell wire, with a pair of wire cutters or a pair of old finger nail clippers.

6. It is important to re balance the SSB every time you remove or add a piece of weight to the sliding Poise. Which means, you remove the pennies and readjust the SS with your thumbs.

7. Now that you have finished making your 10 gram poise, check it out by moving it to the 2.5 gram ( cm ) mark, using one penny, then try the 5 gram ( cm ) mark, and so on, and see it measures up. If not you will have to do some more re balancing and adjusting the SS, just remember the above step # Five and Six.

NOTE:

Keep in mind that the maximum weight that can be accurately measured with the Ten Gram Poise is about 26 grams, using only the left hand cup. You can measure accurately any weight to about 26 grams to the nearest tenth of a gram. Like wise, using your One Gram Poise, you can measure small weights up to about 2.6 grams to the nearest hundredth of a gram. To measure objects greater then 26 grams, you will need to use the Balance made in the " First Class Lever ".

If you wanted to measure out 100 grams or 100 ml of water accurately, using the ten gram poise, how would you go about it?

Back to home page => Vera and Science