How do you measure BSP ?
#2
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British Standard Pipe is measured in the bore of the pipe i think. 3/4 is near as damn it spot on 19mm, 1/2" is bout 12mm, and 5/8 isn't anyhing. The equasion is imperial - mm is x 25.4, and divide it for mm to imp.
Hope that helps.
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If you have a Zeus book, you can measure it anyway you want, cause it has all the dim's in. Although that looks like it could be 5/8 Bsp. do you have the bit it screws into?
#7
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To be assured of any fitting you need three components....internal bore, extrernal size, thread pitch those should enable you with a zeus table to be assured you have the correct size and type BSP, NPT, Metric etc...
HTH
Ian
HTH
Ian
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