Multiple line tool, supplied with 6 different tiny combs, from 7 to 21 strokes
Hand made by Matthieu Coulanges ( www.matthieucoulanges.fr).
Exclusive use for etching or soft material (plexiglass, plastic). Very soft blades, used as a brush to make very close lines. The varnish of the plate should not be too thick, and do not use long bites.
How to change tiny combs : video here
By default the multiline is provided with his box wood key.