Mass
0 APs of mass ranges from 25 lbs up to the equivalent of 50lbs. Infants and toddlers weigh 0 APs in all known sentient species. Two cinder blocks or six gallons of water will be 0 APs. A twin size mattress is likely to weigh 0 APs.
1 AP of mass, up to about 45 kg, peaks at roughly the equivalent of 100 lbs. Human children weigh 1 AP. Many "bulk" items from the "garden center" section of a home improvement store are going to be sold in 1 AP increments, such as large bags of soil or sacks of landscaping glass pebbles. Typical punching bags at a boxing gymnasium weigh 1 AP. An adult cougar (not Puma, we mean the wild animal variety that is not in any way a metahuman or even metahuman-adjacent) probably weighs 1 AP. An oven meant to be installed in a home kitchen has a weight in the 1 AP range.
2 APs of mass is the default expectation for weight of an NPC, most adult Player Characters, and anything else from a mass of 45.5 kg or weight of 101 lbs through an upper limit of 90.72 kg or 200 lbs. Whole-house air conditioner compressor units weigh 2 APs.
3 APs of mass is twice as much stuff as 2 APs. It goes up to 400 lbs, 181.44 kg. A full size home refrigerator weighs 3 APs, especially if the freezer area is on the bottom of the unit.
Comments
Author's Notes
This is a restatement of the Official Rules, hopefully making the concept a little more straightforward for the way our particular brains work. In the White Book, this was "Weight", but we might be dealing with places under a different force of gravity than the surface of Earth Prime.