Convert perch (Ireland) to megalithic yard
Selected category: length.
Definition and details for perch (Ireland):
Perch is a traditional unit of length. In Ireland perch is defined as 21 feet or 6.4008 meters.
Definition and details for megalithic yard:
Megalithic yard is a unit of length used in the construction of megalithic monuments such as Stonehenge. In 1951 the Scottish engineer Alexander Thom (1894-1985) defined this unit equal to about 82.91 cm.