All you need is some standard kitchen equipment, says Dr Ken Vines
It’s not as difficult to estimate the weight of a human hand as John Pye thinks – and can be accomplished in the average kitchen (Letters, 17 August).
Take a transparent jug that is tall enough to take the outstretched hand, although a loose fist could be used with a shorter jug. Weigh the jug. Put in a measured amount of water that is sufficient to cover the hand without spilling over when the hand is put in. This is best done using kitchen scales that are accurate to one or two grams.
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