1. Tare ring
2. Tare boat
3. Tare ring notch
Tare Ring and Tare Boat.
(j) Replace the hood and check the zero. Calibrate.
if necessary. Readjust the sensitivity since thee enter of gravity
may have shifted in a vertical direction because of the displacement
of the large zero screw. (See a.(7) above for adjusting sensitivity.)
All removed parts, including plastic shroud, card-
board and plywood blocks should be retained for use
when preparing to move the laboratory. Place all
the parts in the carton and store in the cabinet
(1) Weights. From time to time the weights of the balance
should be cleaned with the camel's brush or chamois leather.
(a) To remove the weights, arrest the beam and take
off the hood. Move all the knobs to the maximum setting so that the
scales show 99.9999.