Ironclad insulators to prevent damage to the insulator from people using them for targets

LETTERS TO THE EDITORS.

Ironclad Insulators.

To the Editors of Electrical World and Engineer.

Sirs: Your editorial on "Insulators as Targets" interested me very much, as that is the form of trouble that I have so far been unable to do away with. Can you tell me if it is possible to buy the old style ironclad insulator now? I remember since reading your editorial having seen a few of them on corner and ridge irons in Boston in the early days of telephony, when there was no such thing as an exchange but numerous private lines.

FROSTBURG, MD. W. D. LANNAN