BSPT to NPT Adapter
When you hook up most pressure gauges you'll get a NPT (national pipe thread) sending unit that doesn't work in your BSPT (British Standard Pipe Thread) hole in your engine block.
Here's an adapter that is 1/8" male BSPT (to go into the block) to 1/8" female NPT (the sending unit threads into). Length in just under and inch.
Made by Parker Hannifin: part# 1/8F3HG-B
Hook up some gauges to your foreign car.
Fitting, Metric Adapter, Oil Pressure