Quote: Originally Posted by Dwarf
Is it to do with the head?
It is to do with any part of the body.
Ah here, I will have to give it to you, you said it was a Surgical Guide, and so it is,
if I don't I will never here the end of it. lol,
The Hirtz compass
was invented in 1907 by E J Hirtz, a French medical officer and head of physiotherapy at a military hospital. The brass device was used to accurately determine where bullets were located in the body, especially the brain. Bullets could then be removed surgically with precision thereby reducing damage to the surrounding areas of the body. X-rays were also used to guide the surgeon. This example dates from the First World War.