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Do you think this could be by displacement of water and doing the math?

Bea

On 1/15/04 1:02 AM Martin Snow writes:

>I recall seeing a weighbridge on/by a canal which actually weighed the
>boat in the water, by some 'magical' (mechanical) system - gears and
>levers no doubt!
>
>Perhaps someone can remind me where this is and how it worked?
>
>I recall that either 'arms' went out into the canal, or there was a water
>chamber arrangement.
>
>Quite early I think.
>
>Martin Snow
>
>> On 1/14/04 11:16 AM Rose, Edwin writes:
>>
>> >Does anyone know the earliest reference to/use of a weighbridge (as in,
>> >for weighing carts/lorries) and the oldest one surviving?