The 71AD30-01-1-AJN is a multi-deck rotary switch from Grayhill's Series 71, designed for reliable switching in industrial and military applications. It features a 0.5–0.75" diameter body with a 1/4 amp (250 mA) contact rating, molded-in position terminals, and choice of 0.125" or 0.250" shaft/bushing diameters. The switch offers 30° or 36° angles of throw with up to 12 positions per pole and supports multiple deck configurations (1 to 12 decks), with non-shorting or shorting contact options. It is military qualified to MIL-DTL-3786/39 and available in both standard and sealed versions. Common applications include industrial control panels, instrumentation, and military equipment where reliable multi-position switching and durability are essential.