Repeatable accuracy to 0.01 mm is pretty demanding. I know that on my own machine I can get repeatability to +-0.003mm - one microstep, in other words. However, accuracy is another thing, and apart from anything else you are going to need a decent set of collets. As already said, you can do this kind of probing with a simple accurate block plus a straight plain shank in a collet, or spend hundreds or more. For ease of use, you might also want to look at an upgraded Mach3 screenset. Gerry"s 2010 screen set is widely recommended and includes probing functions - a Google search will find it.