Hi Suem, I am new to this forum and all of this stuff period. I recently posted about some tools and machinery left by my grandfather and one I've come to figure out is an Adler 30-1 boot patcher. I'm not sure about measurements and all that kind of thing but I do know it works by pressing the treadle and it has a wheel mounted on front. I'm in North Carolina and just email me if you have any questions and I'll try to answer them. stilljerry1@yahoo.com