It’s for Lady NelsonThats a difficult question to answer without more details mate. What ship is it for ?
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I want to use all wood for them thoughThe 2 little red ones are something like what I need
Very interesting and unusual pump construction. Commonly, on the elm tree pump, the 'spear' connects to the end of the break (handle) and not the cheek, like in your image. While such a pump will work, it will be unproductive, and using this pump will be 'hell of the job' It is a very small amplitude to pump the water.Here they are
That’s perfect thank you
Here are the pair I made ,something like the drawing