JPG 比例

I have a TIF / JPG, and have 比例尺 added in the JPG.

can I use photoshop or other to adjust the 比例 for 1:1 or 1: 2 etc? not just adjust the Pixel or paper size.

and then print out with this 比例 by acutal sizes

thanks

just found out if open in photoshop..the size is a actual size.

But how can I print it actual sizes? seem it > A3...

maybe need print out A3 X2 , and combine to one? what software can I print it? If I have a A3 color printer? because I Know some shop can print it in A1 or A3 X 2 .

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