see workshop handouts - OLAC

Scale, p. 3
10. Scale not given
Use only when the only way to determine the scale is to compare the map with a map of
known scale (see below) and the library’s policy is not to do so.
11. Scale indeterminable
034 0 a
255 Scale not given.
Use only when there is truly no way to determine the scale using one of the
methods described here, including the use of the comparison method.
12. Not drawn to scale
Use of La&u&
034 0 a
255 Scale indeterminable.
Use for birds-eye views, map views, maps of imaginary places, celestial charts and
other maps with nonlinear scales which do not give scale information on the item and
which are not drawn to scale.
034 0 a
255 Not drawn to scale.
Use a scale indicator, if available. If using a ruler, the formula is
n
11 ,ooo,ooo
where n is the number of centimeters measured on the map for lo latitude
1 l,OOO,OOO is the approximate number of centimeters on the ground for lo latitude
13.
To get the representative fraction, divide the numerator and the denominator by n, giving
you 1 to the left of the colon and 11,000,000/n to the right of the colon.
440
450
034 1 a #b 3450000
255 Scale [ca. 1:3,450,000].
AVGOLAC9410