προμετρητής
From LSJ
Ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
English (LSJ)
οῦ, ὁ, a servant of the μετρονόμοι, IG22.1672.291, Hyp.Fr.191, Din.Fr.16.4; =
A mensor, Gloss.