Old 21st Sep 2018, 20:07
  #53 (permalink)  
ShyTorque

Avoid imitations
 
Join Date: Nov 2000
Location: Wandering the FIR and cyberspace often at highly unsociable times
Posts: 12,146
We used chinagraph propelling pencils to draw our track lines etc on fablon covered 250,000 aviation charts - so they could be used many times over.

Problem was, many of the colours would bleed into the fablon. I found that the only colour that didn't do so was the brown "leads".

I still have box of them - twenty five years after I left the service.
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