Sturdy hardwood rod tapered towards the ends. On each side there are twelve equidistant screws, 6.4 cm apart, to which weight combinations can be attached. The bearing (brass bush with 13 mm steel pin for attachment to cantilever or tripod material) is located slightly above the center of gravity, so that there is a stable position in equilibrium.
Length: 161 cm
Use: 7th grade
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