So my uncle gave me this very nice incubator. It is a Marsh Rolex. I'm pretty sure it is one of the first ones they made. I'm thinking 70's or 80's. It does not have any digital controls. It has a wafer that rides above a switch that tells it when to turn on and off. It has an indicator light that comes on and off with the power. It came with the egg turner and has a forced air fan that runs continuously. I cleaned this up, did not take much. It looks like NEW! I plugged it in and turned it on. The unit works great. Fan runs, egg turner works and I have the temp holding at 100 degrees. The question is do I spend $75 for a 10 turn digital controller or run what I have.