Curious what you guys do if you need to buy a specialist tool to do a job do you just pay for it out of a tool budget or do you try and pay for it by adding the cost to the job you need it for?

I'm not talking about general hand tools and test gear etc which it would be expected for us to own.
Just had to spend a about £60 on a vernier caliper and c spanner to change a seal

I'll probably aim to just break even on the job but will at least have some shiney new gadets...

Jon