Home Science Tools BS-311S Quad Beam Balance Operating Instructions - page 3
Setup and Zeroing
After placing your balance on a smooth, flat surface, move each of the
four sliding weights to the zero position on the left side of the beams. Be
sure the 1g, 10g and 100g sliding weights fit into the "0" notches cut into
the beams. Be sure the indicator point on the 0.01g sliding weight is
centered above the "0" on the front beam. The pointer should now be
near zero. (Zero is the "balanced" point at which the white line on the
pointer matches the zero mark on the end of the balance.)
Now you can precisely zero your balance. Adjust
the knurled zero knob, located on the left end of
the beam, until the white line on the pointer exactly
matches the zero mark on the end of the balance.
This may take several attempts, as you need to
wait for the pointer to stop moving after each
adjustment. Turning the zero knob clockwise brings the pointer down,
while turning the zero knob counter-clockwise brings the pointer up.
Once you have zeroed your balance, it is ready for use. You will need to
check the zero adjustment periodically, especially after moving or
transporting your balance.
100g Weight
1g Weight
10g Weight
Pan
Pointer
Zero
Knob
Pan
Loop
Dampening
System
Specific
Gravity Stand
Beam
Pan
Hanger
0.01g Weight
Beam
Bearing
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