I was forced to go shopping for plumbing parts. I knew I could get what I wanted in Wickes but B&Q was nearer . (Wickes =Home Depot - B&Q not so equal) I always check out the tools and I found this inexpensive item.
It was cheap enough to take a chance on one of its two square sockets being close to the size I needed.
This is part of the continuing saga of my first foray into Brampton forks - these are series B forks fitted on a pre-war Meteor. Having been to Bananaman's excellent emporium for wheel building lessons and the loan of a B headstem, he gave me a quick demo of how to unscrew Brampton spindles.
I found that using a small spanner to fit the squared spindle end was unsatisfactory as it would spin off an need me to crawl under the bike to pick it up. Using a 10" adjustable was better but very fiddly.
This key fitted 3 spindle ends, the fourth being slightly burred needed the touch of a file to fit in the key. It really does make spindle removal/adjustment very easy as it stays securely on the spindle as I change my grip. I may even buy a second so that I can do both spindles ambidextrously.