A sense of perspective
Jeez, the human race does something as totally extraordinary as putting a functioning robot laboratory into the polar regions of another PLANET, and all we can do is whinge on about the MEASUREMENTS??!!!11!!
Yep. So here goes. The real WTF is not that the robot arm length is quoted in feet, it's that it's quoted in decimal feet. 7.7 feet is 7' 8 13/32". Near enough.
Mine's the one with the imperial micrometer in the breast pocket. Ta.