Simpson, Westinghouse 2hour Clockwork Oven Timer - Part # 0609100270Simpson, Westinghouse 2Hr Clockwork Oven Timer. Part No. 0609100270. Now use Part No. SE50. 2 hour mechanical clockwork timer. Suits many Simpson & Westinghouse ovens and stoves. If you are not sure about the suitability of this part, please contact us with your model number as there are several different clock timers which look very similar. Easy to fit & fully guaranteed. We have been supplying appliance parts to the trade and retail for over 25