Metric wood screw sizes and why they beat imperial… The old imperial method of measuring screws by gauge makes little sense to some of us today, (like most imperial measurements) and the logic of their origins is known only to Wikipedia (he says smiling!). So, now we are getting to grips with the common sense of metric wood screw measurements. (Arguments against on a postcard to the usual address please!). Right, so what do the numbers mean? Lets take a look at the packaging to start with… The basic info …
