Viewfinder with door peephole for pinhole camera

This is a viewer for using with pinhole cameras. I made it to fit with a door peephole that you can buy for cheap in ebay. Later you should cache the front lens with black tape to fit with the real view angle of your camera .
More pinhole cameras: https://www.fotosiqui.com/?page_id=8408
Ebay: https://www.ebay.es/itm/Agujero-Visor-Puerta-Seguridad-Hogar-Mirilla-Aleaci%C3%B3n-Zinc-Vista-200-Grados/332387682117?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649