I have one of those Tracy Tool poster-size charts hanging up in my workshop, suspended by an old dress-hanger.
If it's really only tapping-drill sizes you need, you could create a table on an A4 sheet of the relatively few for 90% of your work, as that would be quick and easy to read, and leave the reference-books in the house for the odd time you need something else. Make a smart-looking printed form and laminate it, or just hand-write it and keep it a clear polythene bag.
When I made my workshop's travelling-hoist (all Metric screws), I wrote the 3 or 4 tapping-drill sizes needed, in big felt-tip pen characters, on a scrap of white building-fascia plastic and propped it up on a convenient ledge!
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And yes – I have a couple of Zeus books – one in the workshop, other the lives indoors along with my engineering library. The only thing is that over the years the numbers have shrunk… (Rather as big lathe chucks become heavier.)