In the production of construction or repair work is necessary to use the platform and the supporting part to them — goats. However, the latter is usually calculated at a certain fixed height, and work on them is not always convenient.
I use them instead of the two step-ladders. Changing the location of the platform on the steps, adjust the height as needed.
Recommend to read
ETERNAL SCOOP
No words, plastic dustpan easier and more hygienic than metal. But its working edge for strength are made thick, and it is an insurmountable barrier for dust: not just a broom, even...
LUNAR ROVER SCOUT
Dodging huge rocks, deep crevices, and streams of boiling lava, to distant planet moving vehicle. Lightning, crumbling rock, and he continues the study takes soil samples, atmosphere....