Baldhead":2p71t07g said:Brian
Ordinarily I wear 2x glasses for reading and woodwork, on the odd occasion I use my scrollsaw I wear 3x glasses, there are cheap type from Asda, I find this works perfectly well.
HTH
Baldhead
Tim_H":28ilrebb said:+3.00 dioptre lens will give you a working distance of 33cm, magnification approximately 75%
+2.00 dioptre lens will give you a working distance of 50cm, magnification approximately 50%
Adding glasses together will create a compound lens the overall power and magnification depending on the vertex distance from your eyes and the seperation of the two pairs of lenses.
You can also benefit from the inverse square law which basically means a dim light held closer to your workpiece is more effective than a bright one far away, basically as long as you avoid glare more light is usually helpful.
Sorry I know more about optics than scrolling!
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