Three camera tripod legs. Tape on the floor to hold the feet still.
Wooden dowel small enough to break of you run past the mechanical stops.
Still needs one person to monitor the jacks to be sure that are loose and free.
Works perfect
Temp endorsement in pdu
Cold 85 deg. 157k ohms
Less resistance when hot.
100 deg is 39k
6.5 wide, 5 rall
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Measure 5 in to 11 in
clear 3/4 inch to 11 inch, 1 inch away from CL
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Wrench at c3, 2 in diameter, post more than is 3/4 outside.