What does admeasure mean?
The definition of admeasure
Ad*meas”ure, v. t.
Etym: [Cf. OF. amesurer, LL. admensurare. See Measure.]

1 To measure.
2 (Law)
To determine the proper share of, or the proper apportionment; as, to admeasure dower; to admeasure common of pasture. Blackstone.
2 The measure of a thing; dimensions; size.
3 (Law)
Formerly, the adjustment of proportion, or ascertainment of shares, as of dower or pasture held in common. This was by writ of admeasurement, directed to the sheriff.