and again the most dumbest guesses from germany
933 a tool for climbing rocks. the four half wheels are to block (verklemmen) themself in rock-split934 no idea
935 used to flatten car tires / to stop cars ?936 pre-historic pencil sharpener ?
937 stand for thick books, the two flat areas are to hold front and back separately so that old and expensive books will not fold too much ?938 for woodworking, to remove the bark (oops, right word? Baumrinde) from logs
939 funny thing used in itchy and scratchy moovies. no idea what it is used for, microscope? rocket or jet engine?greetings, chris