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| Plumb Bob |
Pendulum Clamp |
Double Hook Bob |
Plumb Bob
Made from hexagonal steel rod by careful machine turning to achieve a
finely sharpened point. Provided with a screwed end cap and a hole
to receive a cord. 85mm diameter x 20mm long. Weighs 140
grams / 5 ounces.
No. SF522-PB. Only $7.50
Pendulum Clamp
This unit can clamp to any horizontal or vertical support up to 5/8"
(16mm) diameter. Holds three pendulums spaced 2 1/8" apart with the
points of suspension of the cords on
the same horizontal line, each adjusting individually 10.5" x 2.40
No. SF522-PC. Only $12.95
Double Hook Pendulum Bob
A cast iron ball (79mm diameter) with hooks on each end for various
demonstrating regarding force and motion. Enamel finish
No.SF522-DB. Only $10.75 |
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Ballistic Pendulum
this is an excellent unit to demonstrate the laws of conservation of
momentum and trajectory. The unit has a scale marked in
degrees for nothing the height and is registered by a counter
weighted needle that remains in place at the height of the pendulum
arc. Instruction manual included.
No. SF522-BP. Only $69.95 |
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