I use an egg ,if you forget and half way through frying your spirit level ,see if it stays in the middle of the frying pan (you may need more lard to lubricate),don't forget to move the sausages...
Clementines! They are very rolley When I had my interior out I drove to work once having put my lunch on the walkthru mat By the time I got to work they had both Disappeared out of the hole where the Sink waste pipe goes through the floor
Ingenious methods but they only tell you that your van is not level which you probably knew in the first place. So you spend the rest of your holiday driving around the campsite trying to get it level by which time your fruit will have rotted or been eaten and you've probably used up all your oil in the process. On a more serious note, by how much does the level on the dipstick vary with the tilt of the van? I would have thought that unless you are parked on A very steep hill, you could still estimate if your engine has enough oil in it to prevent self destruction.
I've got one of these in my drawer. £2 and really useful. http://www.spares2you.co.uk/Target_Level_W4_37814?gclid=CLuuwoH9yM4CFRVuGwodDpcFgA PS Any self-respecting plum is ovoid. And what happens when spherical fruits are out of season? Ha!
You could glue it to a hat, then wear it, standing squarely on the floor. A kindly passer-by could tell you if the bubble was centred if he stood on the seat and peered down. PS The T2 didn't come with a freezer option so your frozen plums would soon defrost and go mushy on one side, so you'd be in grave danger of attaining a false reading and sleeping with your nose pressed against a cupboard all night.
I have a far better method of ensuring the van is level. Tie a plumb Bob to a piece of string, and tie the other end to the bell end of your gentlemen sausage. Then stand in the back of the van legs slightly spread. Have your wife drive the van around till ones bell end plumb Bob is exactly equidistant between ones legs. For best results, wave cheerily at any bemused neighbours, shouting, "it's ok, my wife is just lining my dipstick up"
there speaks the voice of experience.,but I like your line of thought,it could also spell the end for my plums
When you are home, just check that your floor in the middle of the van is fairly level in the first place when the bus is on a level surface as I don`t think most are level to even start with, especially with these stock busses with the snooty nose in the air stance. Anyway find something that is level ish when you`re on a level surface, something like the tinware around the engine bay where the foamy rubber thingy goes. Check the ground for level first off, then check it for level whatever it is that you think might be level then put a water bottle on it with a couple of inches of water missing and you`ll soon see if it`s level where the water laps up to the patterns on the bottle , and that`s good enough to check. If you are worried or not 100% sure, just make sure the oil level is above half way between the marks then re check when you fill up with juice. If your engine is warm or you think you are a bit out of level just don`t fill it up to the top mark and you`ll be super brilliant smashing Now you can go back to checking for the roundness of your plumbs and what you want to wobble where and who`s lost what down what hole with who. Eggs don`t roll truly be the way so don`t use an egg Ozziedog,,,,,,,,,,,,,,,,,, MARBLES, that`s the jobby, I `ve lost mine by the way