Thermal monoculars are without a doubt the best of all optical instruments for seeing in the dark. They use a special lens to capture the electromagnetic (infrared) radiation…
Auto-darkening welding helmets offer all the usual eye and face protection that welders need, with one major improvement: the lens you look through isn’t permanently dark…
It’s great to explore the natural environment that surrounds us, and there’s something special about sleeping in a tent. It can be terrific fun for the whole family or a…
Mechanical beam scales have been around for at least 4,000 years, and while digital scales are now more common, the simplicity and accuracy of beam scales means they still…