K'NEX Measuring Wheel
You can you use your K'NEX Measuring Wheel to measure distances - around your house, around your school or elsewhere.
Distances are measured in rotations of a pointer on the model, but you can convert "rotations" into a dimension such as metres or feet if you wish.
View video
The model requires:
1. A K'NEX base kit, and…
2. Two K'NEX gears, a Crown gear large Yellow plus a Gear small Blue.
3. A large K'NEX wheel, assembled from a Medium hub and a Large tyre.
First, assemble the eight 3D connectors shown in the photo opposite.
Please visit Handy Hint A4 if you need help to do this.
Now, add to a red rod:
1. A snap cap black.
2. Two silver spacers.
3. An orange connector attached to a blue rod.
4. Two more silver spacers.
…and the second axle support, followed by:
1. a silver spacer.
2. a tan clip, with the pin facing outwards.
Now build the wheel assembly, by adding to a yellow rod:
1. A snap cap black.
2. A red connector.
3. A tan clip, with the pin facing away from the red connector.
Then add:
1. The wheel, with the pin of the interlocking clip pushed into one of the small holes in the centre of the wheel.
2. A silver spacer.
3. A red connector.
4. Another silver spacer.
5. A tan clip, with the pin facing away from the red connector.
And finally add:
1. A blue gear, with the pin of the interlocking clip pushed into one of the slots in the centre of the gear.
2. A snap cap black.
…and like this from the front.
Testing
To test your Measuring Wheel:
1. Hold your Measuring wheel by the handle, and run the wheel along any flat surface.
2. You can measure the distance travelled by the wheel by counting the number of times the blue pointer has turned around. For instance, the side of a house may measure 10.5 "turns" of the pointer.
3. It is quite easy to calibrate your measuring wheel by running it along a tape measure, to find out how long 1 "turn" is in centimetres or inches.
4. You might then use this information to draw a map of your garden or school grounds.
5. Note that you can measure the lengths of vertical surfaces as well as horizontal surfaces.
Website last updated 2 October 2024. Feedback 
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