A person variant type was identified as "trench binoculars", a combination of binoculars and periscope, typically useful for artillery recognizing applications. It projected just a few inches earlier mentioned the parapet, thus preserving the viewer's head safely while in the trench. The Canon EOS R was positioned within the fingers https://eosr52073.vblogetin.com/22789478/the-basic-principles-of-eos-r