-Incused '1' inside outer skirt
- Incused '2' inside outer skirt
- Incused '3' inside outer skirt X
- Unmarked
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Australian Telegraph Insulators
RandomAustralian insulators from communications lines. There are several different kinds that look the same at a glance, but they are very different. This shows some of the many kinds of Australian insulator. There are pottery, porcelain, glass and even...
