Old 21st Sep 2018, 17:17
  #44 (permalink)  
Join Date: May 1999
Location: Quite near 'An aerodrome somewhere in England'
Posts: 25,374
At Coningsby we had to provide met briefs for each trip. Over to the weather-guessers, get a brief, make up OHP slide.

One day there was a classic warm / cold frontal system across the UK, so I lovingly produced the blue and red frontal positions and black isobars on my synoptic chart all in chinagraph - a work of art by the time I'd finished...

Give brief. Place slide on OHP and switch on. Everything appears in black on the screen. Puzzled for a moment I realised that chinagraph is opaque, so my artistry was all silhouetted.

"Terribly sorry, it must be one of the old black-and-white OHPs", I announced and carried on with the brief. No-one queried my comment! Even the trip went well....for once!
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