HPH also has some good images on the website of its UK dealer...
see www.HpHUK.co.uk

Craig

At 19:48 07 March 2016, wrote:
On Monday, March 7, 2016 at 11:36:03 AM UTC-8, JS wrote:

It broke the test rig, good stuff!

I'm not sure I'd fullyt trust the engineering of folks who can't design a
simple whiffle tree.