| Name |
Symbol |
Value |
Description/Notes |
| ångström |
Å |
1 x 10-10 metre |
Equivalent to 100 picometres |
| chain |
ch |
22 yards;
1/10 furlong |
Distance between wickets in a standard cricket pitch |
| fermi |
fm |
1 x 10-15 metre |
Equivalent to 1 femtometre |
| hand |
|
4 inches |
Used to express a horse's height |
| league |
|
Land: 3 miles;
Sea: 3 nautical miles |
Generally accepted values |
| line |
l |
1/12 inch |
|
| link |
|
8 inches |
|
| marathon |
|
26 miles and 385 yards |
46,145 yards;
42,195 metres |
| micron |
µm |
1 x 10-6 metre;
10,000 ångströms
|
Equivalent to 1 micrometre |
| mil |
|
1/1000 inch |
UK & US: "thou" |
| mil |
|
10,000 metres |
Norway & Sweden: "myriametre" |
nautical
mile |
nm |
6,080 feet |
UK nautical mile |
| pole |
pl |
5½ yards;
¼ chain |
Also called "perch" & "rod" |
| X-unit |
XU |
1 x 10-13 metre;
100 fm |
Used with X-ray wavelengths |
