ebay camber/castor gauge

[hayesey2000]

Has anyone tried one of the (relatively cheap) camber/castor/kingpin gauges from ebay:

https://goo.gl/4RKEqZ

I'm wanting something I can reasonably accurately measure and set both camber and castor angles. I would use it with a camber bar. Just wondering if this is worth paying extra for over a cheap camber gauge that can be had for about £20.

[hayesey2000]

this ebay auction shows the camber bar & cheaper camber gauge I mean:

https://goo.gl/qtwhg1

[stevieturbo]

It will be as accurate as the person using it, and for castor you'll need to measure wheel angles of 20deg either side which requires some rotating plates or some improvisation

And of course a perfectly level surface to do all your measuring...otherwise it's a little pointless.

[SlimJim16v]

The first one linked too is marked too fine I think to get any accuracy.
I have used one like in the second link, but without the extra bits, to see what my camber was doing on turn in.

It's just to get you a rough idea of where the suspension is. The smaller the range marked, the more accurate it'll be. You also need a verticle surface to mount it, I used the discs.