H. E. P. Commission​ Pole detail.

By Graham Catt; posted April 30, 2017

View Original (1560 x 2046) 527KB


Hi. Found this on the WWW. Interesting information albeit more for actual people who do / did this for a living. There is reference to 2 insulators labeled OB #9410 and OB #9938. Do these actually exist ? Do they have a U &/ or M # ?? Thanks. Graham.