4. Unlock the beam by rotating the lock knob as indicated on the right side of the scale.
(fig. 4)
fig. 4
5. To zero scale, slide both upper & lower poise weights to the far left until they point to 0
. Using the screwdriver adjust the coarse zero adjustment screw (clockwise to raise
inter
. Turn the fine zero adjust knob (counter clockwise to raise beam, clock wise to lower
Upper Poise
fig. 5
Lower Poise
6
beam, counter clockwise to lower beam) until the floating beam pointer and fixed po
are nearly aligned. (fig. 6)
7
beam) to complete alignment of pointers.
fig. 6
2
