![Measuring Tapes for Circles and Spheres – David Richeson: Division](https://divisbyzero.files.wordpress.com/2016/04/measuringtapes1.png)
Measuring Tapes for Circles and Spheres – David Richeson: Division
Price: $ 3.50
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I'd like to thank Matt Parker for introducing me to diameter tapes (or D-tapes). These are measuring tapes used by foresters to measure the diameters of trees. The forester wraps the measuring tape around a tree as if measuring the circumference, but the scale on the tape is adjusted so that the measurement gives the diameter…
![https://divisbyzero.files.wordpress.com/2016/04/measuringtapes1.png](https://divisbyzero.files.wordpress.com/2016/04/measuringtapes1.png)
Measuring Tapes for Circles and Spheres – David Richeson: Division by Zero
![https://divisbyzero.files.wordpress.com/2016/04/img_3975.png?w=1000](https://divisbyzero.files.wordpress.com/2016/04/img_3975.png?w=1000)
Measuring Tapes for Circles and Spheres – David Richeson: Division by Zero
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