When I started trying to teach Traveller to new players I had trouble getting the to grasp the displacement ton. Most people aren't very good at visualizing objects and size relations in their head. So I made myself a little visual cheat sheet for future use.
The cube is 2.4x2.4x2.4 meters, (7.8 feet) ( roughly one displacement ton)
Human 1.75 Meters tall ( 5'8 -5'9")
stateroom 10x12x8 ( 3.04x7.3x2.43 meters) 4dt ( not same layout as deck plan rooms just a rough visual size reference.)

The cube is 2.4x2.4x2.4 meters, (7.8 feet) ( roughly one displacement ton)
Human 1.75 Meters tall ( 5'8 -5'9")
stateroom 10x12x8 ( 3.04x7.3x2.43 meters) 4dt ( not same layout as deck plan rooms just a rough visual size reference.)