On 12/05/2011 08:46, Tim Lamb wrote:

http://www.pclairtechnology.com/Prod...?ProductId=103
Looks OK although they don't offer a price:-)

http://www.lsengineers.co.uk/pcl-e35...pump-2372.html

A thought on gauge accuracy.... pressure in the connecting pipe may be
more than that in the tyre if the Schrader or whatever valve has to be
opened by the applied air pressure. If the connector physically
depresses the valve release, air will flow back to the pump on the
return stroke necessitating a valve at the pump.

Uh? The tyre connector holds the Schrader valve continuously open.
There's always a non-return valve in a footpump.

--
Andy