23
Mar
There are two optical (physics) rules that constrain magnification for headband magnifiers Is the inverse relationship between lens size and lens power. As lens power goes up lens size and …
23
Mar
Every man should have at least one headband magnifier , great for collectors, hobbyist , working on electronics etc. As men age magnification is needed and lessons frustration in doing …
23
Mar
The most popular magnification for higher magnification projects is 2.5x lens, which gives you a focal length or working distance of approx 8″ inches for that magnification, for some this …