Panasonic ET-DLE020 Lens with 0.280-0.299 Throw Ratio
Panasonic ET-DLE030 Ultra Short Throw Lens 0.38:1 | Enlightened
Download | Projector | Panasonic Global
ET-DLE020 | Projector | Panasonic Global
Projector / General - Throw distance calculator
Optional Lens Guide | Projector | Panasonic Global
Vintage Panasonic Electronic Calculator Model 860 JE-860U - Made in Japan | eBay
File:Vintage Panasonic Electronic Pocket Calculator, Model JE-8220U, Made In Japan (14180314485).jpg - Wikimedia Commons
Optional Lens Guide | Projector | Panasonic Global
File:Vintage Panasonic Model 660 (aka JE-660U) Handheld LED Electronic Calculator, Made in Japan, Price Was $59.95 in 1974 (8716009192).jpg - Wikimedia Commons
Panasonic Professional PTZ Camera Field of View Calculator | Panasonic North America - United States