OO9 is 4mm to the foot scale (that is OO or 1/76) but using 9mm track gauge (the same size as N gauge). This is...
Cross lock tweezers are for all intense purposes regular tweezers, they are roughly the same size and are used for pretty much the same kind of jobs as standard tweezers, however, they have been engineered in such a way that the two metal pincers...