SPUR GEAR APPARATUS
The mechanism demonstrates the relationship between the ratio of the
number of teeth on spur gears and the transmission ratio of gears.
With straightforward experiments, the torque conversion in gear wheel
pairs and the efficiency of a gear unit are investigated.
The model is intended for wall mounting. The well-structured
instructional material sets out the fundamentals and provides a step-bystep guide through the experiments.
] Demonstration and student experimental unit on
set-up and principle of toothed gearing mechanisms
 4 galvanised steel gear wheels
 2 anodised aluminium cable pulleys
 2 sets of weights
 Ball bearing-mounted gear wheels and pulley.
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ROLLING DISC ON INCLINED PLANE
This equipment consists of two separate modules for determining the moment of inertia of solid discs. The inclined plane and the cradle use different methods, and the results obtained by both methods can be compared.
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CRANK AND CONNECTING ROD APPARATUS
This benchtop unit demonstrates the conversion of smooth rotary motion
into reciprocating motion. The input angle is set on a ball bearing
mounted crank disc made of anodised aluminium and read off on an
angle measuring scale integrated into the base plate. A millimetre scale
is fitted for the outlet stroke. Crank radius and connecting rod length can
both be adjusted, each have three positions. The simple insertion of a
bolt enables the swivelling cylinder to be locked, thus a crank drive with