Britool don’t really exist any more. Great shame.I have some Britool wrenches and some Sykes-Pickivant sockets and some 150th anniversary King **** wrenches all were made in England which two of the brands are just importers now but what a treat your set is from back when.
The hex drive sockets are generally quite inexpensive for the quality, so that’s a very useful thing to have!
I would think back in the day when Britool made these fine set's, metric size nuts and bolts were few and far between in everyday british engineering, and 3/8 and 1/2 AF was close enough for those damn johnny foreigner contraptions ! who knows? not IThat’s a superb set!
I agree with humber2, and I think he’s spot on with the dates.
As you probably know, the hex drive predates the square drive. There was a school of thought that the hex drive allowed for a slightly smaller socket (sort of KoKen Z Series of 70 years back) so it had it’s advocates, and hence the two systems were produced in parallel for so long!
Very comprehensive set. Fantastic to have Whitworth, A/F and Metric, as well as female and male square sockets!
But I have to admit, you got the “rough end of the pineapple” ending up with a metric socket set that excludes 10mm and 13mm…!