Gauge-pieces
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D II, 500V
Gauge-piece D II, 500V cat.no. 1901-000, 1902-000, 1903-000, 1904-000, 1905-000, 1906-000, 1907-000
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D III, 500V
Gauge-piece D III, 500V cat.no. 1908-000, 1909-000, 1910-000
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D IV, 500V
Gauge-piece D IV, 500V cat.no. 1980-000, 1981-000
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