For quick measurement of the Golden Ratio to whom it may concern
Assembly done by putting tiny drops of superglue to each 4 holes in the bottom parts (phrasing). Have corresponding rivet already penetrating the two upper part and slap those suckers together and wiggle the part between in desperate attempt to not let the glue (that you put too much despite of my instruction) stick the moving parts together. Glue one at a time, or don't, go wild, who am I to judge.
Scaling doesn't effect functionality, unless not done equally to every part.