Thank u I need to find one that will go in the upper part of the machine on the right side part of it sets behind the barring block so it needs to be flat with the side of the machine I know this will work for the knee but how will it work for the upper do u know the mm of the site glass and how do I get the old one outhttp://www.amazon.com/s/?ie=UTF8&ke...vptwo=&hvqmt=e&hvdev=t&ref=pd_sl_4uq5z4k4f9_e
I especially like this one:
http://amzn.com/B00KIUREXS
Steve Shannon, P.E.
I have a van Norman 22LUSorry, you're going to have to be more specific about what kind of machine. Have you googled "sight glass"?
Steve Shannon, P.E.