These are US Navy electrodes from 1952 appox lengths
L-5”x1.5
And
L-7x1.5
Also 1/8 electrodes
Cannot find anything on them!
https://www.milsurps.com/images/impo...0aafbef4-1.jpghttps://www.milsurps.com/images/impo...9f4540b5-1.jpghttps://www.milsurps.com/images/impo...d58336e3-1.jpg
The small 1/8 oneshttps://www.milsurps.com/images/impo...915ca812-1.jpghttps://www.milsurps.com/images/impo...b3b41d81-1.jpg