OK, herewith results of today's quasi-scientific experiment.
1) Repeat of yesterday's test with German-made teaspoon : [1]
- 1 flat teaspoon salt weighs 5 grammes
- 1 heaped teaspoon salt weighs 10 grammes
2) New test today with measuring teaspoon : [2]
- 1 flat teaspoon salt weighs 6 -- 7 grammes
- 1 heaped teaspoon salt weighs 10 -- 11 grammes
I am afraid that these tests were conducted using only postal scales, with minimum granularity 1 gramme and notional accuracy +/- 0,5 gramme. I could repeat them using an analogue analytical balance with minimum granularity 0,1mg, but that would seem to be massive overkill to me; however, I am more than happy to do it if anyone is that interested, and it would have the added benefit that I could also compare flat and heaped 1/4 and 1/2 teaspoon measuring spoons.
** Phil.

