Leviticus 27:25

And all thy estimation shall be according to the shekel of the sanctuary,.... The shekel kept in the sanctuary, which was the standard of all shekels; not that there was a shekel in the sanctuary different from the common one; for every shekel ought to have been as that, of the full weight and worth of it; and the estimation was to be according to such a shekel, and the money paid in such, even in full weight:

twenty gerahs shall be the shekel; which the Targum of Jonathan calls "meahs" or "oboli", one of which was about three halfpence of our money, scarce so much, and weighed near eleven grains, as Bishop Cumberland i has calculated: see Ezekiel 45:12.

i Of Scripture Weights and Measures, ch. 4. p. 111.