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Ruby oil pressure gauge

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Ruby oil pressure gauge
Parazine Offline
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Joined: Aug 2017 Posts: 882 Threads: 48
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Location: North Wiltshire
Car type: 1927 Chummy, 1938 Big Seven 1/2 a Trials Chummy
#1
01-07-2019, 07:56 PM
Does anyone know what the thread is on the input connection to a 10lb early Ruby oil pressure gauge??

I measure 3/8 by 26tpi, so 3/8 BSB possibly?

I'm trying to plumb in an oil gauge for my RK saloon, I don't trust oil buttons ever since one exploded in my face about twenty years ago!



Actually, it was nearer thirty years ago  Blush

TR
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Tod Offline
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Joined: Aug 2017 Posts: 48 Threads: 7
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#2
01-07-2019, 08:30 PM
Hi There,
I have measured a 0-10 psi gauge I have on the bench. The one here measures 28 tpi making it 1/8 BSP. I confirmed this by running a new 1/8 BSP nut down the thread.
Tod
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Parazine Offline
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Joined: Aug 2017 Posts: 882 Threads: 48
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Location: North Wiltshire
Car type: 1927 Chummy, 1938 Big Seven 1/2 a Trials Chummy
#3
01-07-2019, 08:48 PM
Hi Tod,

Thanks, yes agreed, 1/8 BSP it is!

I should explain that I had a bag with 1/8 BSP hardware in it. Except a 1/4 BSP nut had found its way in there Confused
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