Canadian Insulator Identification Guide
| Drawing | Photo | Design Number (CD) | Primary Embossing | Full Embossing (EIN) |
|---|---|---|---|---|
 |
 |
102 | (Diamond symbol only) | [060] (F-Skirt) (*Diamond Symbol) SB |
 |
 |
136.4 | No Name | [010] (F-Crown just above wire groove) [Backwards number] {May have a glass dot above the number} {MLOD} SB |
 |
 |
143 | Montreal Telegraph | [020] (F-Skirt) MONTREAL TELEGRAPH CO {MLOD} SB |
 |
 |
162.4 | No Embossing | [010] [No embossing] {MLOD} {MLOB} RB |
 |
 |
742 | No Embossing (Threadless) | [010] [No embossing] {MLOD} GB |