measuring
Different ways to do the same job. Check the setting and limits of each use before choosing one.
Ruler
Check the wheel has room to turn inside your actual box.
Suggested in A hand-cranked creature.
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Ruler
Compare the span before and after changing the bridge. A marked paper strip can also record the gap without a numbered measurement.
Suggested in Build with folded paper.
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Ruler
Useful for lining up the fold and hole marks.
Suggested in A hand-bound scrap notebook.
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Ruler
Keep passages wide enough for the actual ball, including corners.
Suggested in A tilt maze you design.
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