From token; admeasurement, i.e. Consummation -- pattern, sum.
see HEBREW token
H8508. toknith
תָּכֵּנִית noun feminine measurement, proportion; — absolute Ezekiel 43:10 (< read ᵐ5 נִיתוֺ תָּכְּ Ew Hi Co Toy and others); ת ׳חוֺתֵם 28:12 thou wert one sealing up (the) measure (RVm), i.e. exhibiting perfect proportion; Manuscripts Sm and others ת ׳חוֺחַם the seal of (perfect) proportion; but dubious, see Commentaries