Gas Level sight glass ?

[HPbyGD]

I am looking for a source for some sight windows like they put in oil reservoirs and float bowls. Does anyone have a source they would like to share ?
thanks GD

[ijames]

If you need a tiny one like on a Holley bowl these are probably way too big, but go to www.mcmaster.com and put sight glass in the search box. They have screw in plug style and tubular styles. Basically any "wonder where to find that?" or "wonder if they make something like this?" search should start at mcmaster carr, huge selection and great website. Great service and decent prices.

[dannobee]

Do you have fabricating skills and equipment? For a fuel tank, an "obround sight glass" might be more practical than a round sight glass. The parts can be easily fabricated, then cut a piece of 1/4" glass and form a round o-ring in the obround space before bolting it all together.