Question

Handspan, cubit, and footstep are non-reliable methods for measuring length. Explain?

Answer 1

1. Handspan, cubit, and footstep are not used for measuring length because their sizes vary from person to person. That is why these are called non-standard measuring lengths.
2. No two people can have the same length which is not desirable for a standard unit.

Hence, handspan, cubit, and footstep are non-reliable methods for measuring length.