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STL1

STL1 is a North of Scotland Hydro-Electric Board (NoSHEB) specification for 132 kV towers. No details are known. The specification is cited on some (but not all) general arrangement and erection diagrams for the following types:

Eve 0.175 was also listed here as as STL1-compliant, but if this is the case, the evidence for this needs to be located.

The relationship with and any major differences between STL1 and L132 are not known.