Proxy printer

Import a deck or tick cards one by one, then press Print: you get a PDF of A4 sheets, nine cards to a sheet, ready to cut.

Cards come out at 63.5 × 88.9 mm (2.5 × 3.5 in). Print the PDF at 100% (“actual size”): the 50 mm ruler on each sheet lets you check. An investigator takes two spots, front and back.