A, G, M, a, angstrom unit, astronomical unit, block, centimeter, chain, chiliad, chiliagon, chiliahedron, chiliarch, chiliarchia, cubit, decameter, decimeter, dekameter, ell, em, en, fathom, finger, foot, footstep, fur, furlong, grand, hand, inch, kilo, kilocycle, kilogram, kilohertz, kiloliter, lakh, league, light-year, line, link, meter, micron, mil, mile, millennium, millepede, milligram, milliliter, myriad, myriameter, nail, one hundred thousand, pace, palm, parsec, perch, pica, point, pole, rod, step, stride, ten thousand, thou, thousand, wavelength, yard