Free PDF game aid.
From the publisher's website:
This free set of counters provides all the ships, missiles, gravity hexes, world, small body, and disabled markers you need to play out battles using the combat system in GURPS Traveller Interstellar Wars. Just cut out the counters, mount them on cardboard or cardstock, and you're ready to play! You can also print them directly to cardstock with the right stock and printer set-up. The counters can be used with any map that uses one-inch or larger hexes.