Abstract: A puncher comprising two drills held on chucks attached on shafts combined with gears provided in two front seats and a rear seat able to be changed in their position so as to change the distance between the two drills, the front seats and the rear seat being connected with a main seat which is possible to be moved up and down by means of a vertical threaded rod and a support rod so as to lower down the two drills to punch holes in one of many distances adjustable in papers placed on a bottom base and pinched immovable in a pincher on the base.

Abstract: A shrinkable tubular frame is composed of a plurality of curved tubes having the same length and curvature but different diameter for shrinking in a largest-diameter curved tube one after another so as to be become very short when being shrunk. Each two curved tubes are locked by a fixing unit when being extended out. A winding unit for winding back a rope extended in the frame so as to pull the other curved tubes, except a left one, to shrink in the left largest-diameter tube after being extended out.