|Top to bottom: Summit S125, Sheaffer Snorkel, |
Parker Duofold AF, Koh-I-Noor Chinagraph Pencil 3260/6.
Here's something I've not considered before; highlighting barrel imprints. I have to say, I'm delighted with the results, using a wax based china marker (akin to a crayon) as demonstrated in the fine Grandmia Pens video embedded below.
The marker used was a white Koh-I-Noor 3260/6 bought from eBay seller hobbyartandcraft, for £1.69 including shipping.