PCB legs and standoff

Some of the arcade PCBs I receive do not have legs to keep the PCB off the base where they are mounted - this is particularly frustrating in sandwiched multi-board setups where the components end up resting against the ground, increasing the risk of component breakage.

These legs keep the board 20mm away from the ground and the standoff ensures that there are 20mm between the multi-board setups - these are fastened with a 30-35mm M3 screw, screw it from the top, let it cross all the way throu