'Khyber Pass' percussion pistol

[Patrick Chadwick]

There is a technique called "reflectance transformation imaging" that is used by archaeologists to bring up old inscriptions. YouTube has some examples. For many of the inquiries we get here, it would be very helpful.

Unfortunately, without having the necessary equipment, one can only use the "squint and rotate under a strongly directional light" method, relying on the brain to form a kind of average impression - the "joining the dots" effect. Give it a try Anzac15 !