Why don't you make your own tool to check the heights etc. I remember watching either a kit car is born or a race car is born and they showed the tool as the car was tested and its quite rudimentary. All you would need is a bit of string some wood and a protractor.
Click to see my build photos on Flikr
Saturn MX5 Based Chassis, Limited Slip Diff & 2.4 Quick Rack.
Build cost.... seems to be spending more on tools than car bits at the moment! (they will be handy in the future though).
Car iva'd and passed 15/08/2014. Finished weight 572kg.