Vintage Military Chesterman 12” Steel Rule - No 300D

Vintage Military Chesterman 12” Steel Rule - No 300D

Circa estimated mid century 

A vintage British military Chesterman No.300D 12” precision steel rule presented in clean used condition.

Marked with military broad arrow, has usage & oxidisation marks commensurate to its considerable age.

Dimensions approx. Weight 73g