Very off topic. I need to measure a crankshaft for parallelism and con rods for twist. Beyond my capabilities so I asked a local patternmakers to check on their CMM machine, but they deemed their tolerances not good enough. Any ideas who can do this for me, preferably not too far from Derby?
Bits in question are from a 6 litre aero engine (Blackburn Bombardier), crank is 1 metre long. Engine is being rebuilt to restore the Auster AOP9 to flying condition.

I can't help with the question but I like the sound of your project

Auster AOP9

Any decent engineering shop be able to this with a surface table, vee blocks, dummy shafts and clock gauges.

Accuracy to 0.01mm is achievable, though it may be a bit labour intensive!

What about trying the motorsport engineering department at Derby University? They have extensive engineering workshops and would probably have staff and students interested in checking it out without any cost to your project?

mookaloid's link is to an Auster 5, not a 9 - see my archive for AOP9. I cannot figure out how to post a link or a photo! I know I'm thick but this is ridiculous!

If you can't find anyone else to measure it any decent engine reconditioners should be able to help.

Personally I'd take it to a licensed aero engineers as they can check the crank for any other problems. Nothing like losing a crank during take-off!

I flew with a guy in the States once who broke a crank during take-off and ended up cart-wheeling into a vineyard. He was walking again 6 months later.

http://www.bradfordgrinders.co.uk/index.html