File:2015 04 08 005 Blitzlicht Hanimex TB555.jpg - Wikimedia Commons

Photoelectric Sensor, BOS 26K-PA-1LHB-S 4-C, Sn=150mm, Diffuse, Background suppression, Sensortype, Switching frequency, Rated operating distance Sn

Balluff BOS 26K-PA-1LQB-S4-C Photoelectric Sensor Retro-Reflective 10-30Vdc

File:Jahrzeit-Licht, elektrisch.jpg - Wikimedia Commons

File:Hanimex 35 dual lens.jpg - Wikimedia Commons

FT — Tier I French light tank

FH - Gallery — Feltham Arts

John James Plotz American Air Museum

Commons:Photo challenge/2015 - April - Back side/Voting - Wikimedia Commons

Soviet Tanks, WoT Blitz Wiki

File:Lollipop in motion, May 2009.jpg - Wikimedia Commons