1944 Lithgow Markings..??

A friend donated me this old Lithgow .... could someone explain the markings on the receiver rear , the 1 ,2,3,4, ......10 ect..?

Thanks..

Inspector's stamps, I guess done as the body passes each stage of manufacture. Ian Skennerton calls them viewer's marks (The Lee Enfield, p574)

They are inspection "view" marks. Each one confirms a procedure during machining has been completed within spec. The same goes for the marks around the barrel.

Thanks for the reply,s ..:)

I have never taken any notice of the markings before on the No1 MK111,s ....