1 fortnight = 14d 1 microfortnight = 1.2096 sec
1 furlong = 1/8 mile
1 firkin = 1/4th of a barrel
1 microcentury = 3155.76 s = 52'35,76" (Enrico Fermi: "standard" duration of a lecture period)
1 nanocentury Pi seconds
1 microacre 6 sq inches
1 nanoacre = 4.0468564224 mm˛
1 femtolightyear 10m 10 yards
1 attoparsec = 3.08568cm 1.2 inches
3 femtoparsec = 101.236 yards
1 attoparsec 0.1 foot
1 nanolightsecond 1 foot