The goverment weigh scales in British Columbia are always open for free use after hours.
A small car can fit on the entire scale, everyone else weighs one axle at a time and I have always weighed the two trailer axles as a unit. I have never thought of weighing each trailer axle by itself but all you have to do is position yourself right and it should give both weights.
I'll do it the next time I head out with the Montana.
Don & Donna
Vancouver Island
2005 Ford F350 V10 Lariat CC 4x4 LB SRW 11200 GVWR
2006 Montana 2955RL
click on the little pic to see a big pic