You remove the 2 screws from the plastic housing the holds the light. These 2 screws (they are short) also hold the stainless besel in place so it can be removed once they are out. You will find that there are most likely 4 screws in the base that you may or may not have to remove. Try losening them amd rotating the compass counter clockwise. The holes have two sized so you can start the screws, mount the compass, and clock it into position. I had mine rebuild by the local Ritchie guy for about $200. He installed a comletely new stage that has much better dampning as well as an led light that cost about $25 dollars more. These compasses run around 800 so I figured it was worth it.
shaun