If you're only doing plans, you can just use a tape measure. 5m is much more useful and usually sturdier made than 3m.
Where's the fun in a tape measure (unless you're a cat, that is).
Lasers for everything!
pretty sure cats would choose lasers over tape measures too. they go bonkers for the red dot.
@NotThamesWater started
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If you're only doing plans, you can just use a tape measure. 5m is much more useful and usually sturdier made than 3m.