reg tool.JPG
I have had this since 70's, but don't remember the original purpose. Might have been for the original Calypso first stage, and I think I have used it for that.
I filed the blade thickness down just a little to exactly fit the slotted adjustment cap on Conshelf regs. This prevents dinging them with a screwdriver blade that fits the slot too loosely.
Filing a notch out of the middle allows it do double duty as a very efficient valve stem nut tool, while not affecting its use on the Conshelf.
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