making a scuba pressure gauge or SPG

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how to make a scuba presure gauge SPG

Rating: 5.00

  1. Lonnie L Hacker says

    well made,keep up the good work

  2. TMoD7007 says

    Do they really make these by hand??? Ever wondered why the producing industries go down in the us? Whe else uses such a useless unit like psi???

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