Typically it is an inch/mm issue. If they are realy small, try scaling by 2540%. 1in = 25.4mm

Otherwise try 240% cm output.

It's the curse of "freedom units". I know, troll bait, but I dont have 12 fingers, or 3 arms, and unfortunately I dont have 5280 hairs on my head anymore, so I have switched to a logical system to the extent allowed...

RR
Metrologist by (former) trade.