Hickok 1050-127 SA-3 Nuvistor Adaptor for all Hickock tube checkers $35.00. Hickok 1050-129 SA-5 Rimlock Adaptor for foreign rimlock tubes. $45.00. Hickok 1050-50 checks 2C29C tubes. $25.00 Hickok CA-5 Universal Adaptor. Has many different type sockets. $125.00 All plus shipping. J W7KSG