I used to stock the real MoD spec. gauges as manufactured by Arrowmark Tool and Gauge in Australiaicon and they were excellent. Of course, they only came in sets of three .064, .067 and .074 and in the eyes of many, they were too expensive at about $75-$80 a set so I stopped carrying them and now he no longer makes them. He also made excellent military spec. bolt tools and other tools too. All excellent quality and some still used on my bench including a set of the HS gauges.