1. The ( Slider Poise, SP ) will be our One Gram Poise. Looking at Fig A, you will notice that the beam has two Small Sleave ( SS ) for balance adjustment, the ( SS ) is about 1/4 inch in width. It might be that your SBB may need only one SS. The SS is made from cutting one of the three legs of a 1/2 inch PVC " T " ; the three legs are about 1/2 inch in size. See previous diagrams for building the SBB. On the other hand, the SP is a 1/4 inch slice of a 1/2 inch PVC pipe, and has been modified ( see earlier instruction on building the SBB ) with a mark or line on it to indicate the center position. From my calculations, to balance a 2.5 gram penny at exactly at the 25 cm mark it should take about 3 grams, this would include the 1/4 inch PVC SP and the square shape paper clip, with the 2 and half paper clips hanging from the square paper clip, and 2 inch of bell wire. Let me mention that if you have read all the instructions on building the SBB you will recall that there are two types of 1/2 PVC pipe, where one has a much thicker wall then the other. The thicker PVC pipe was purchased at the H. D. national store. There is no way of knowing how much your SP weighs, so assuming it is close to my SP, then add the 2 and 1/2 paper clips to the square paper clip and hold back the bell wire ( bell wire is a very small gauge copper wire used for telephone hook up, the smaller the gauge the better it will be. ) NOTE : I used a newer type of paper clip, bought at Staples, it is silver in color and much smaller then the original paper clip, so therefore it has less weight as well, the Staples paper clip has a number #1 on the box. The other disadvantage in using Staples paper clips, I had to buy a set of four boxes, and I only needed one. There is no way of knowing what kind of paper clips you are using, that is why it is important to use the bell wire, for final adjustment. Using your original SP and determine where you are located to balance the 2.5 gram penny. The question is how far are you from the 25 cm mark ?

2. There should not be any thing in the plastic cups. NOTE : notice the in Fig A the SP is not located exactly at zero ! Make sure your SP is located exactly at zero and adjust your SS for balance. Follow the procedure as described prior in the Building of the SBB.

3. Once you are satisfied that the SBB is balanced, add your 2.5 gram penny in the left cup, then move your SP near the 25 cm mark and see where it begins to balance. If it falls short of the 25 cm mark, you may have to add a paper clip, if it begins to balance past the 25 cm mark you may have to remove a paper clip or using a pair or wire cutters, cut a paper clip in half, the idea is to be just slightly short of 25 cm which would make the SP slightly lighter, so that you can use your bell wire to finish the job. By adding the bell wire you will be past the 25 cm mark.

4. Once you add or take away any weight from the SP you have to re balance the SBB by adjusting the SS, ( remove your 2.5 gram penny ) so that the SP is exactly reading zero grams. See prior procedure for balancing. Which means you have to tap the beam with a pen or a pencil and it is moving slightly up and down, and the pointer is going by the plumb line the string and the nut, just as far to the right as it moves to the left.

5. Once you are slightly above the 25 cm mark, by adding your bell wire, use a pair of wire cutters or use an old pair of nail clippers, which will work just fine. Then snip away about 1/4 inch at a time. As you get closer the 25 cm mark, decrease the length that you cut. Remember step # 4 above

6. NOTE: with the paper clips you want to end up slightly short of the 25 cm mark, and then by adding the 4 inch bell wire ( Use your judgement as to the length of the wire used, ) you want to end up slightly beyond the 25 cm mark. It is this soft copper wire and its small diameter, that you will use to reach the 25 cm mark.

7. When you end up at the 25 cm mark, you will have to re balance the SBB.

8, You now have a One Gram Poise, where a 2.5 gram weight is balanced at the 25 cm mark, this means that at 10 cm mark, the object weights one gram and at 20 cm mark the object will weight 2 grams.

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