Measuring dimension in isometric view in sheet

I have created a saved view in the model & saved view model is converted into sheet. Now I want to measure dimension for each member in the sheet. But If I measure the dimension for saved views, the dimension

shown are wrong.Similarly If I import the same model with plan or elevation view into sheet & measure the dimension for each element, the dimension shown are correct. How to measure the dimension for

isometric views & saved views when they are in sheet. To be clear, I have attached a file for your reference.