1
Q
3 normal dimension rules
A
must have small arrow,
leader lines don’t touch drawing,
dimension reads left to right in centre above line
2
Q
chain dimensioning
A
dimensions placed in a line
3
Q
parallel dimensioning
A
more than one dimensiom taken from the same place, datum line one side where all touch
4
Q
circle dimensiong
A
dimension diameter, symbol ∅
5
Q
radius
A
symbol R, meaures arc
6
Q
2 genral rules for dimensiong
A
you shoud only write a dimension once
always in mm
