From D A LATTER
Your article on possible uses for old tyres reminds me of the time I
spent in Uganda, in the 1960s, when polio was unhappily rife, and callipers
prohibitively expensive. Professor Huckstep, of Mulago Hospital, devised
a way of making callipers from the two materials always to be found in profusion
in a developing country: old tyres and bits of steel reinforcing rod left
over from building sites. As a result, thousand of Ugandans were enabled
to walk.
D A Latter Farnham
