If you, the interrupter gear would see, you must answer me these questions three:
WHAT is your name?
WHAT is your favorite color?
WHAT was the color of the cowling of Voss' Tripe?
All kidding aside, I'm not your huckleberry on pics or explanations on interrupter gear. It really depends on the "type" of interrupter gear, there were several models in use, and being tried, throughout the war. Do you have a specific model in mind? Nationality? Year?
I'm sure there is someone here who can answer your question to your satisfaction.
History is the lie we all agree upon.