Was in Lee Valley store (Canada) the other day and noticed this set of a 1-2-3 block and some anodized aluminum bars.
There is only a single bar of each size. If I purchased 2 sets would the pair of, for eg, the 1/2-inch square ones act as a pair of parallels? Or, as I suspect, might I get - by random selection - one bar with the + tolerance and the other with the minus? Any way to determine?
Just a bad idea?