How to use a triple-beam-balance Mrs. Halaw

Parts of a balance - Pan- Pointer - Riders- Beams - Adjustment knob

Step #1 Clean the pan.

Step #2 If the pointer is not at zero, have the teacher zero the balance.

Step #3 Place an object in the center of the pan.

Step #4 Move the middle rider over a notch until the pointer drops. Then move it back one notch.

Step #5 Repeat the previous step with the back rider.

Step #6 Move the front rider over until the pointer is at zero.

Step #7 Add the values of the three beams to determine the mass.

There will always be two decimal places in your answer. The last one must always end in a 0 or a 5.