Sometimes ¡°close enough¡± is not close enough, as you say, but why was the sling not 9¡¯10¡±, almost exactly 3 metres?
Otto
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On 3 Jan 2024, at 18:48, Brent via groups.io <whodo678@...> wrote:
Interesting to know, but not being a pilot or mechanic, I never ran into that before.
I used to be involved in lifting light, little things weighing only 40 metric tons.
I had to deal with length and mass. Since rigging comes from tall masted ships, I had to deal with the ¡°US¡± ton, the metric tonne, and occasionally long and short tons. Thankfully, Imperial measurements didn¡¯t come up.
Since the original rigging was in metric lengths, to prevent unstable lifts, we had custom slings made. So to match a 3 meter sling we had ones made that were 9 foot 9 inches. 10 foot slings are standard here, but could throw off a lift enough to be outside safety standards.
