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
Greenhouse dugout
The general idea of a greenhouse on a summer residence or a plot each. At its creation usually requires a lot of expensive and scarce material: bearing metal or wooden racks, film...
The screw on clearance
Modelers in different disciplines often have to deal with the problem of determining the speed of rotation of the parts, screws, shafts, and even cassette recorders. That's what the...