Archimedes created an algorithm for calculating Pi around 250 BC. It was approximated to 7 digits,since then Pi has been calculated to several trillion places. the first stage of this puzzle involves identifying the 4 missing numbers. The blue squares indicate which numbers are missing, so all you have to do is come prepared by either memorizing Pi to a few places or bring a smart phone ( make google do it). There is a cylinder inside the cylinder with another cylinder inside that. Install your 9 volt batt then turn the handle on top counterclockwise till the 2 lenses line up. then lift the inner inner cylinder till you can see Pi. Then look for the blue squares, it's so easy a 4th grader from buzzfuzz's school could do it. Once you have identified the missing numbers you can open the lock on the first box. The key to the cache is inside a wooden box inside the first box. Open the wooden box and your there. Cylinders inside cylinders and boxes inside boxes. After some debate we decided to give this cache a 4 1/2 rating. It would have been 5 save one factor, all the info needed to open this cache is avalible on the interwebb, which is not the case with the neighboring cache ( the devils own). By the way we placed this cache here so everyone will have to go by that cache on the way. Hang your heads in shame as you pass by. Other than that have a great day geo-caching.
