Used to locate crimps on size 20-12 pin and socket contacts installed in MIL-C-38999 connectors. Contact numbers: MS27490-12, MS27490-16, MS27490-20, MS27491-12, MS27491-16, MS27491-20, MS274492-12, MS27492-16, MS27492-20, MS27493-12, MS27493-16, MS27493-20, MS27494-12, MS27494-16, MS27494-20, M39029/56-351, M39029/56-352, M39029/56-353, M39029/57-357, M39029/57-358, M39029/57-359, M39029/58-363, M39029/58-364, M39029/58-365, M39029/87-474, M39029/87-475, M39029/87-476, M39029/87-477, M39029/87-478, M39029/87-479, M39029/87-480, M39029/87-481, M39029/88-486, M39029/88-487, M39029/88-488, M39029/88-489, M39029/88-490, M39029/88-491, M39029/88-492, M39029/88-493, M39029/89-498, M39029/89-499, M39029/89-500, M39029/89-501, M39029/89-502, M39029/89-503, M39029/89-504, M39029/89-505, M39029/106-615, M39029/106-616, M39029/106-617, M39029/107-621, M39029/107-622, M39029/107-623, M39029/117-634, M39029/117-640, M39029/117-641, M39029/118-642, M39029/118-652, M39029/118-653, M39029/118-654, M39029/121-665, M39029/121-666, M39029/121-667, M39029/122-672, M39029/122-673, M39029/122-674