Originally Posted by
ala_xfire
Back in the day ( mid 1960's ) I worked on cash registers and accounting machines for National Cash Register, now NCR. The old timers would tell me "put your eyeball on the end of your spring hook and you can see it".
57 years later, and I finally CAN !
Got this in today, works perfect !
I have a 5.5 mm I use for a borescope, got off amazon.
I was surprised how cheap they are.