HI all

I am  very new to draftsight and as a newbie have a  problem I hope someone can help with.

I have  2 separate images that I have drawn.I have set the block unit formats to centimeters on both drawings so now I want merge them to together .  I open one of the drawings, copied and then paste it on to the other drawing but for some reason the drawing I have copied and pasted is way bigger than it should. As in the image the four ground image measures  8 cm by 22.5 cm and the back ground image over all is 65 cm high and 52 wide the lower part is 23 cm wide which is where I want the four ground image to fit into but some where along the way I have made a mistake  and not sure how to correct it 

Cheers 

Rhys