Posted by Mike Field on June 01, 2021 at 19:04:29 user mikefield.
In Reply to: Re: Pencils! posted by Peter Hyland on June 01, 2021 at 03:01:58:
What Peter said. Those copying pencils were essentially what we called here 'indelible' pencils (although there were differences in composition of the 'lead'). Their 'leads' had a purplish tinge to them due to the aniline dye that made them indelible -- really indelible.
Chinagraph pencils had a waxy 'lead' in them, a bit like a crayon, that allowed you to write (although not indelibly) on glossy surfaces including glass.
I still have some chinagraphs around here somewhere, but I doubt whether I still have an indelible pencil -- they went out when ball-point pens came in.
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