- #1

Yes I do understand scale ration 1:25 means 1 unit on a map equal to 25 units on a real and scale ration 1:75 means 1 unit on a map equal to 75 units on real

Question my

__for the ratio 1:25 showing first number as 0.5 m (i.e 50 cm, 500 mm)__

**Kent tri scale ruler**While first reading for ratio 1:75 as 1 m (100 cm, 1000mm).

My confusion for the ratio 1:25 ruler has

**25**small tiny line between 0 and the next reading,,, means there are 25 units right ? if we times 25 tiny lines x 25 mm = 625 mm not 500 mm

http://imgur.com/a/CmVFe

Same thing for the ratio 1:75 ruler has

**20**small tiny lines between 0 and the next reading means there are 20 units right ?? 20 yimy lines x 75 = 1500 mm not 1 m

http://imgur.com/a/42AyT

Thanks