We have sold thousands of jewellery loupes and the years. It is frustrating to see other sellers of loupes misrepresenting the powers of their loupes and limitations! Hopefully this guide will help you to know the truth about loupes offered online.
Along with choosing the right magnifier you also need to know how to use it correctly with the correct lighting. This means that you may need 2-4 macular degeneration magnifiers for doing different tasks.
With a large magnifier (e.g. for reading books and maps) hold the magnifier part way between your eye and the object. Now move the magnifier very slowly backwards and forwards until you have the best image, not too small, not too fuzzy. The idea with the largest reading magnifiers is to sit up straight, sit comfortably, you should not have to bend over the magnifier and peer closely (essential for navigating in a car, you need to glance down at the map and glance up at the road signs).
The Nimrud lens: Whatever its origin, as ornament, as magnifying lens or part of a telescope, the Nimrud lens is the oldest lens in the world. Looking at it evokes mystery and wonder. It can be seen in room 55 of the British Museum, in case 9 of the Lower Mesopotamian Gallery. However unusual this object seems at first, it is not unique. In fact there are several hundred reported lenses now on record from around the ancient world.