Early optical sights for the Lee Enfield

[Strangely Brown]

Sir Howard Grubb's sight has its design origins in the Voigtlander "Kontur" camera viewfinder, although I am unsure which came first. My money would probably be on the Voigtlander given their research into optics goes as far back as 1756 when the company was first founded.

I also see a parallel here both politically and technically with the Singlepoint sight, whose use and private purchase was banned during the 1970's by British troops serving in Northern Ireland.