OurWorkbench

There are predominately two sizes of screw in bulbs. Do you have a night light with a screw in bulb? These would look like the ones at https://www.dollartree.com/sunbeam-7...t-packs/156065 There is a sewing machine screw in bulb that has a larger base. If you scroll down at https://www.amazon.com/Dritz-Sewing-.../dp/B00AQ737T8 you will see the basic three types and sizes of sewing machine bulbs. One is the bayonet type and the other are screw in. If you measure the socket that the bulb screws in, you should be able to tell which bulb you need. If it is about a 1/2 inch or a little smaller than the night light or the Amazon link would be the bulb. The bayonet and other screw in would be larger than 1/2 inch.

Janey - Neat people never make the exciting discoveries I do.
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Wood Sprite

Sherri, I know this is an old thread but are you still trying to figure this out? If so, I have a Montgomery Ward UHT J1265 and can take a photo of the bulb to show you and see if there are any marking on the bulb that will help. I don't know what type it is as I've never had to remove it.