New discover: FIL small "delta" style.

By Paolo De Pasqual; posted September 15, 2015

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The new discovered insulator besides its similar, larger models by FIL. From left to right: "Bussi" three part, d=230 mm h=205 mm; "intermediate" d=140mm h=140 mm (the only one known of this type), "small" d=100 mm h=105 mm