Meiji Techno MA151/10/04 - C Mount Adapter with 0.45x Lens
"C" Mount: Adapter
Replaces silver photo tubes on EMZ-8TR, EMZ-12TR, EMZ-13TR, ML2000 and ML5000 models and can also be used for MS-15 and MS-50. "C" Mount Adapter with 0.45X lens (Replaces existing photo tube).
Mount: Specification Thread
"C" mount lenses provide a male and a female attached on the camera. This normally creates the thread 1.00" (25.4mm) in diameter, with 32 threads per inch, designated as a "1-32 un 2A" in the B1.1 standards for unified screw threads.