METRICS
SI
is the accepted abbreviation for the metric system and stands for
the international system. Suggested orders of accuracy are as
follows:
BUILDINGS
Building
Plans are measured to the nearest millimetre.
Building
area to nearest .1 of a square metre
RENTS
$/m2
per annum for commercial and $/m2 per week for residential
MAPS
Recommended
scale ratios are 1:50, 1:100, 1:200, and decimal multiples of these.
1:20000 is a useful scale for typical rural properties.
LENGTH
|
1m
|
100cm
|
1000mm
|
|
1km
|
1000
m
|
|
|
1cm
|
10mm
|
|
1
foot
|
0.305
m
|
|
1
mile
|
.61km.
|
Mortar
gap between bricks: 9.525 mm
|
1m
|
3.28'
|
|
10'
|
3.048m
|
|
15'
|
4.572m
|
|
20'
|
6.096m
|
|
25'
|
7.62m
|
|
30'
|
9.144m
|
|
33'
|
10.06m
|
|
40'
|
12.19m
|
|
45'
|
13.72m
|
|
50'
|
15.24m
|
|
55'
|
16.76m
|
|
60'
|
18.29m
|
|
65'
|
19.81m
|
|
66'
|
20.12m
|
|
70'
|
21.34m
|
|
80'
|
24.38m
|
|
90'
|
27.43m
|
|
99'
|
30.18m
|
|
100'
|
30.48m
|
|
1chain
|
20.12m
|
|
1m
|
3.28'
|
|
1link
|
20.12cm
|
|
1km
|
1000m
|
|
1mile
|
1.609km
|
AREA
|
1ha
|
10000m2
|
2.471 acres
|
|
1km2
|
100ha
|
100000 m2
|
|
1ft2
|
0.0929 m2
|
|
|
1perch
|
25.3 m2
|
|
|
1rood
|
1012 m2
|
|
|
1acre
|
4047 m2
|
|
|
1mile2
|
2.59 km2
|
|
|
1m2
|
10.764 ft2
|
|
|
2acres
|
0.8094ha
|
|
|
5 acres
|
20235m2
|
2.0235ha
|
|
1square (100ft2)
|
9.29m2
|
|
VOLUME
|
1m3
|
1kl
|
1000l
|
|
1l
|
1000ml
|
|
|
1ft3
|
0.0283m2
|
|
1gal
|
4.55l
|
MASS
|
1kg
|
1000g
|
|
1t (tonne)
|
1000kg
|
|
1lb
|
453.6g
|
|
1ton
|
1.02t
|
Note
it is illegal and unprofessional to advertise in imperial units. If
an agent must use the old measurements then he/she should at least
show both metric and imperial measurements.
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