-- Extra conversion data used by Module:Convert.
--
-- [[Module:Convert/data]] defines all units and is transcluded in all pages
-- where [[Module:Convert]] is used. Testing new units by editing that module
-- would invalidate the cache for all affected pages.
--
-- For quick changes and experiments with new units, this module can be edited.
-- Since this module is transcluded in only a small number of pages, changes
-- should cause little server overhead and should propagate quickly.
--
-- If a unit is defined in the data module, any definition here is ignored,
-- so defining the same unit in both modules is not an error.
-- A unit defined here can refer to units that are also defined here, and
-- can refer to units defined in the data module.
--
-- Periodically, those extra units that are wanted permanently can be removed
-- from here after being added to [[Module:Convert/data]].

local extra_units = {
["u"] = {
    symbol = "u",
    name1 =  "unified atomic mass unit",
    utype    = "mass",
    scale    =  1.6605389e-27,
    prefixes = 1,
    default  = "kg",
    link     = "Atomic mass unit",
    },
["dalton"] = {
    target = "u",
    symbol = "Da",
    name1 =  "dalton",
    },
["feddan"] = {
    symbol   = "feddan",
    usename  = 1,
    utype    = "area",
    scale    = 4200,
    default  = "m2",
    },
["Mi"] = {
    name1    = "mile",
    symbol   = "mi",
    utype    = "length",
    scale    = 1609.344,
    default  = "km",
    subdivs  = { ["ch"] = { 80, default = "km" }, ["chain"] = { 80, default = "km" }, ["ft"] = { 5280, default = "km" }, ["yd"] = { 1760, default = "km" }, ["furlong"] = { 8, default = "km" } },
    },
["micron"] = {
    target   = "µm",
    default  = "µin",
    },
}

return { extra_units = extra_units }