Lyman Pro 505 Setting Up

SETTING UP YOUR LYMAN
PRECISION RELOADING SCALE
Pro 505 Scale
The Lyman Scale sets up quickly and easily. First remove the base casting from the carton.
Now grasp the scale beam and move the large poise (or balance weight) to the right to the
zero setting. Rotate the scale beam until the magnetic damper plate (copper colored) is in the
straight-up position. Align the beam bearings on the base casting and rotate the beam 90
degrees into position so that the knife edge is resting on the vee block bearing.
Next, remove the lower pan from the carton and hook it to the pan hook wire on the small
poise end of the beam. The pan arm's "elbow" should face inward, towards the base casting.
The final step in assembly is placing the dump pan in the lower pan. The scale is now ready
to "zero".

Zeroing (Calibrating)

Set the assembled scale on a secure level surface, free from drafts or vibration. Move both
poise (balance weights) to the "zero" position and adjust the leveling screw under the left end
of the base casting until the beam pointer rests on "zero". Rezero the scale every time you use
or move it.

Weighing

To weigh a bullet, shot or powder charge, place the weight in the dump pan, making cer-
tain the moulding of the lower pan fits the dump pan properly. Move the large poise to the
left to the first notch which causes the beam pointer to drop below zero, then move the large
poise back one notch. Now move the small poise to the left until the beam pointer indicates
zero. This is your reading.
Weight Measurement Specifications
Pro 500, M-500 Scale
Both the Pro 500 and the M-500 Scale (formerly D-7) have a capacity of 505 grains, 500
from the large poise scale and five (5) from the small poise scale. They are accurate to plus or
minus 1/10 of a grain and have been carefully calibrated at the factory. Measurements on the
small poise run from 0-5 grains marked in 10th grain increments.
Lyman M-500 Scale
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