14-03-2018, 11:54 PM
With the kind help of an ex-BBC colleague in loaning same (thanks Phil 
) I've scanned the graticule from a Gould/Advance OS3351.
After a bit of bitmap editing, I've managed to edit out most of the 'provenance' (!) so here's the end-result which I hope will be of interest/use.
Best wishes
Guy
) I've scanned the graticule from a Gould/Advance OS3351.After a bit of bitmap editing, I've managed to edit out most of the 'provenance' (!) so here's the end-result which I hope will be of interest/use.
Best wishes
Guy
