11-17-2007, 12:02 PM
|
#5
|
|
User
Join Date: Jun 2002
Location: The USA
Posts: 5,919
Thanks: 0
Thanked 6 Times in 4 Posts
|
You see these on Swiss M1929 Bern Lugers...hardness tests...similar to the Rockwell Hardness Test...
http://www.gordonengland.co.uk/hardness/rockwell.htm
|
|
|