I have tried all the published methods for testing my lead alloy for Brinell hardness. Like many others I was frustrated using the Lee 20 power optical Microscope to measure the indent diameters on ingots and bullets. I searched in vain for a used toy microscope to adapt to hold the Lee scope steady and in focus. Then I found a holder that was a perfect fit right out of the package. It is the holder for the Opti Scope USB microscope that is exactly the same diameter as the Lee Microscope (5/16"). I contacted Matt at optitekscope@gmail.com and he indicated that he could sell these bare stands to folks for $19.95 including shipping. I thought I would share this with folks here who own the Lee Lead Hardness Testing Kit since it makes it very easy to use.