On 16 Jun, 09:05, Brian Wakem wrote:
David Mitchell wrote:
What a time to break my measuring jar, on the way to the gauge at
midnight. I could only measure the rainfall in cc's - does anyone have a
conversion to mm's?


Easy to calculate. For a standard 5 in raingaguge = 127 mm diameter
and thus 63.5 mm radius:

For a cylinder of 1 mm depth, volume of water = Pi x radius squared

Thus 1 mm depth = 3.14 x (63.5)^2 = 12, 668 cubic millimetres = 12.668
cubic centimetres or millilitres

Thus 1 mm = 12.7 ml or cm^3

If your gauge is not 5 in/127 mm, recalculate using the appropriate
diameter and radius

HTH.

Stephen
Stratfield Mortimer, Berkshire