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USB scopes are great, give a lot of detail and have, really come down in price.

But, they are slow to use, and you don’t always need that level of magnification or detail, as when honing and you...

With the scope on the spine and the lens over the bevel, focus on the bevel at 60X.

Then, as Jerry said, hold the scope between the thumb and index and ring fingers and use your ring finger on the...