Lyman's model has been great for me. Was very impressed with the quality for the price. Quick and simple to use, comes with a digital viewing screen.
Not only a screen but you can put an SD card in it and take pic's, I've been very pleased as well
This can be quite helpful when when you need so show/share something with others. I have a new 300 WM and somewhere after 100 yds, a pit showed up in the chamber which is causing a protruding dimple on the brass. Was able to show the pics to the the gunsmith. The jury is still out as this just happened.
