Jon1964
Regular.
I remember them!!Got loads of old Boots gear - mostly passed down from my late father.
Got a really weird hydrometer-like contraption at work that a customer brought in. Looks like a huge turkey baster, with a (sadly missing) hydrometer inside. I'll try and get a picture tomorrow...
Sure I had one, but must have got thrown out years ago, wish I had kept it now. It was a hydrometer and syphon in one, so you could draw a sample off, direct into itself to take a reading if memory serves me.