Judging Height and Distance
Just curious if anybody knows of any type of electronic measuring device that can measure height and distance. I know hunters use some sort of range finder to measure distance laterally, but is there something that could measure distance vertically? Say you are Dennis Turville in Heaps Canyon in 1978 and you come to the end and want to know exactly how far it is to the ground, but you don't want to pull out your rope and try to measure it the hard way. What the hell is out there on the market today to complete the task? I know if you are Dennis, you are SOL as far as technology goes in 1978.
Reedus