In the clamp fits a standard Euro bottle
Part 3 and 2 are hold together with a metric m4 nut and a 4.0x 16 screw.
part 4 fits into the back of part 1 and is used to fix the model to a piece of furniture on one side. This allows the entire model, except for part 4, to be removed and used only when needed. I have attached part 4 with tesa powerstrips.
The clamp is designed for a distance of 35 mm.
The author marked this model as their own original creation.