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RA 8486 G.N.RLY SINGLE BLOCK INDICATOR FROM CROSSING BOX ship-zone-a This publication has 343 pages

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This publication has 343 pages packed with text

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sheep dome bell

A pressed alloy road sign NO THROUGH ROAD

RA 8486 G.N.RLY SINGLE BLOCK INDICATOR FROM CROSSING BOX ship-zone-a This publication has 343 pagesA Great Northern Railway single deck block indicator , these instruments were used in small crossing cabins and indicated to the crossing keep which direction an approaching train was coming from so the correct protecting signal could be cleared. This instrument has been lightly cleaned and checked over, coils tested and in full working order. The case French Polished finish is in excellent condition.

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