LSJ
ον, accurately measured, dub. in PTeb. 5.85 (ii BC), v.l. in LXX Si. 26.18 (23); of full weight, νομίσματα Cod.Just. 10.27.2.6. Adv. -μως, ἴσον precisely equal in weight, Hp. Mul. 1.1; Comp. -ώτερον BKT 3 p. 15.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
in weight (MT)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars