Hi Guys and Gals - I'm new here
After lurking a long while and just browsing so much great info, I finally have something useful to reciprocate:
It's called Lacing Tape: there's quite a range available these days - black, white, coloured - and different materials too: nylon, polyester, nomex. Here's a couple of links:
https://www.aircraftspruce.com/catal...acingTapes.php
http://www.is-cabletec.com/downloads...acing_Tape.pdf
Hamish Mead
Ledbury, UK