Hey yall, I was just curious ... Are grinders mostly all 2", 2.25", 2.5" and 3.5", or do manufacturers all use a different size (deviating within the mm range) ? Thanks!
They use all different sizes. There is no industry specific that require all small grinders to be 1 inch in diameter. A medium grinder could be 2 inches from one maker and 3 inches from another.
They are sized based on desire of the user. I guess there might be somemanufacturing considerations involved. But hand grinders are made and sold in the sizes that people want to buy.