British Aircrew Knee Boards
Knee boards are used for making notes before and during flights.
They consist of a white plastic / card material behind a thin perspex sheet.
The perspex can be written on using a Chinagraph pencil.
RAF / RN Resources
AP1182E, Volume 1, Section 1, Chapter 16 (AL 69, June 1958)
This section describes the Mk2/Mk2A flying suits. A listing of the pockets gives a description of the "kneeboard":
Right thigh (with pencil pocket attached containing a perspex sheet) Writing pad and pencil. The perspex sheet may be written on with a Chinagraph pencil or used as a base for writing pad.
Service Images
Theis screen shot was taken from this video on YouTube on F4 Phantoms in British QRA service; it shows a Phantom pilot taking notes on the kneeboard of his Anti-G Suit, using a Scripto Chinagraph pencil.
