These make great gifts for people over 50 (or even 40 sometimes).
You only need to turn a handle (blank should be a minimum of 5" long by 1" square) to hold the gold-plated split ring that encases a 2 1/2" diameter lens, ground to 3x magnification. A threaded insert tightens the handle to the frame.
It comes with a brass handle sleeve and gold-plated end plug. For easiest turning, our turning mandrel and a set of magnifier bushings are recommended (sold separately). Requires a 7mm drill.