# Scale 1:25 or 1:75 why scale ruler first reading is 0.5m and 1m respectively ?

Question asked by zillah in #Coffee Room on Aug 21, 2017

zillah · Aug 21, 2017

Rank E2 - BEGINNER

Dear folks

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

My confusion for the ratio 1:25 ruler has

Same thing for the ratio 1:75 ruler has

Thanks

Thanks Posted in: #Coffee Room

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

**Kent tri scale ruler**showing first number for ratio 1:25 as 0.5 m (i.e 50 cm, 500 mm) 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 next reading means 25 units right**??**if I multiply 25*25 = 625 why scale reads it as 500 mm or 0.5 m????Same thing for the ratio 1:75 ruler has

**20**small tiny lines between 0 and next reading means 20 units right ?? if I multiply 20*75 = 1500 why do I have 1000 mm or 1 m ????Thanks

Thanks Posted in: #Coffee Room

Ramani Aswath · Aug 22, 2017

Rank A1 - PRO