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O Scale Progress .Summer-Fall 2010-Signals for blocks 16 into 12main, 12 siding. | |
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| Updated: October 21, 2025 | |||
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Signals for blocks 16 into 12main, 12 siding. |
Signals Z12MW, Z12SW See http://www.gsmrm.org/members/o_scale/OSDocuments/Trackplans/signals.pdf
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