NATO is from Timefactors; specifically bought as the fittings are 'blasted' which matches the case on my DK15, plus its that bit longer than most NATOs which suits me.
Guy
In small proportions, we just beautie see:
And in short measures, life may perfect bee. - Ben Jonson (1572 – 1637)
Inscription on the Longitude Dial
Hatfield House, Hatfield, Hertfordshire AL9 5NB, England