General & OtherSwitch layouts. Showing graphically the leads, offsets and all dimensions needed for locating frogs of all numbers and curves in all switcheAugustus Torrey![Switch layouts. Showing graphically the leads, offsets and all dimensions needed for locating frogs of all numbers and curves in all switche]()
Switch layouts. Showing graphically the leads, offsets and all dimensions needed for locating frogs of all numbers and curves in all switche
Augustus Torrey
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“Switch layouts. Showing graphically the leads, offsets and all dimensions needed for locating frogs of all numbers and curves in all switche” by Augustus…
Catalogue details
- Author
- Augustus Torrey
- Category
- General & Other
- Language
- English
- Source
- HathiTrust