Seeing the BM tester took me back to the one i had before that, a much larger, and quite heavy, dark blue machine, may have been like the one one of the posters mentions. You had a glass jar of Dextrostix strips, and you put a large bit of blood on, then waited a set time, then washed the strip under running water, or with water from a small bottle you squirted water from. Then you put the strip in a machine made by Dextrostix, and it came up with a result. Accurate, but too big to to carry places very easily and test in a cafe etc!