Split monogram letters are different when loaded to 2 different pcs

When I load a split monogram A into fusion on my PC its roughly 18x21 inshes. When the same file is loaded onto a different PC in Fusion its like 3x3 1/2 inches. Even after the inches is selected from the drop down on PC #2. Im sure its a setting issue. But not being able to see there PC I have no idea what setting or where. Any info or insight apriciated, Thank you.