Tools & Measurement. Technology. The application of science for practical purposes is called technology . New technology allows scientists to get information which wasn’t available previously. Tools for Seeing. Compound Light Microscope
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Zero the balance before you determine the mass of any substance.
Slide all of the riders back to the zero point. (To the left.)
Check to see that the pointer swings freely along the scale.
Use the adjustment screw to obtain an equal swing of the beams if necessary.
Place the object on the pan, move the riders along the beams beginning with the largest mass first. (The rider in the middle). If the riders are notched make sure all riders are in the notch before you take a reading. Move the rider, one notch at a time.