Donegan Optical Optivisor LX W/Lens 1.75x @ 14" - LX3 PropsSpinners was the main strength tank

was the main strength tank of the Gross Deutschland

or more often during the war

Premium borosilicate glass boiling flask engineered for educational science laboratories requiring vigorous heating and boiling applications

An all-around performer

Donegan Optical Optivisor LX W/Lens 1.75x @ 14" - LX3 PropsSpinners was the main strength tankDonegan Optical OptiVisor LX Binocular Headband Magnifier 1. 75x Magnification The Donegan Optical OptiVisor LX (LX 3) is a precision binocular headband magnifier designed for hobbyists, modelers, and craftspeople who need hands free magnification with an extended working distance. This professional grade optical tool provides 1. 75x magnification at a generous 14 inch working distance, making it ideal for tasks requiring broader field of view and