Hello,
I am restoring a General 220 hollow chisel mortiser that once belonged to a high school's woodshop class. It was abused, but still in good shape. There are two oil cups that hold oil for the motor dovetail ways (pictured below). One of them broke before I purchased the machine. The manual does not specify the thread size or size of the cup, just "Oil cup No. 801." I don't have a thread gauge that matches the thread of the oil cup.
Does anyone know the size of the cup and its thread size?
Thank you.
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