Title: Be careful what you order, measure twice buy once.
Review: Bought this as a repair item and have broken it during installation, my own fault. I knew it was a tight fit and the ferrul was not the correct size any way. I was just trying to make it work instead of returning it, duh. My tube is about 1 3/8 inch dia and this switch is about 1/64 inch too tall. I tapped it in anyway but then found I did not have enough threads sticking out to attach nut. Removal was deadly to switch.Good luck to others who buy, I will be looking locally. Switch height is about 1 25/64 inch. Ferrul is 1/4 inch dia.
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