revoke - cancel, not retain, end validity of⏎
yardstick - gauge, a measure⏎
statute - law, legislation, formal rule⏎
unexpired - valid, remaining, still in force⏎
scale - range, spectrum, measure, gauge⏎
serve - provide, help, spend time, do duty for⏎
tactical - schematic, worked out, carefully planned, strategic⏎
uneconomic - wasteful, unprofitable⏎
voluntary - uncharged (fee), offered, done willingly⏎
rotate - change regularly, pass to each member in regular order⏎