These tables are invaluable to both beginner and advanced cooks. Here is photo of how a simplified version of these tables are presented as 2 pieces of magnets on my fridge door. They were purchased several years ago from Lakeland Plastics in the UK.
Whilst shopping for Christmas presents last year, I spied magnetic conversion tables on sale at Crate & Barrel at the ION in Singapore. For those of you who prefer a DIY version, may I suggest that you print these tables, laminate them and stick the tables on your fridge door or notice board in the kitchen. You will find 3 types of tables containing more details than my fridge magnets.