I have enough of a machinist background to know that either he has measurement tools, or he has no clue what the tools are. there is a tiny chance they onlp mad

I have enough of a machinist background to know that either he has measurement tools, or he has no clue what the tools are. there is a tiny chance they onlp made parts to fit each other without measuring sizes - but that seems very unlikely and can be discounted without even knowing them.