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2
Attach to
Ear
th
Ground.
GRA
VIT
ATIONAL
TORSION B
ALANCE
AP-8215
E
qu
i
p
m
e
n
t
Included:
• Gravitational Torsion Balance
• support base with leveling feet
• 1.5 kg lead balls (2)
• plastic plate
• replacement torsion ribbon
(part no. 004-06788)
• 2-56 x 1/8 Phillips head screws (4)
• Phillips screwdriver (not shown)
Additional Required:
• laser light source (such as the PASCO OS-9171 He-Ne Laser)
• meter stick
Figure 2
Equipment Included
1.5 kg lead
masses
replacement
torsion ribbon
plastic
demonstration
plate
aluminum
plate
leveling sight
large mass
swivel support
pendulum
mirror
zero adjust
knob
torsion ribbon
head
2-56x1/8
Phillips head
screws
optical grade
glass window
leveling feet
Summary of Contents for AP-8215
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