**Xenosys Surgical Loupes**
They are not free, but you get what you pay for. Beautifully light, perfectly adjusted for me and frankly a snip at the price.
I got a pair of the Looks 2800 - 2.8x with a massive field of view, and only something stupid like 50-60g!
I would recommend them unreservedly and R&D were fantastic.
Stitching is already better!