On Wed, 6 May 2020 03:26:32 +0100, Andy Burns
wrote:

AnthonyL wrote:

I hurriedly bought a pump some years back and have never been able to
use it.

Usually there's a locking lever, your photo doesn't appear to show one?

There isn't one, nor any apparent provision for one.

--
AnthonyL

Why do scientists need to BELIEVE in anything?