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Model 35 (dc to 26.0 GHz, 1.25 Megohm/0.05pF)

Model 35 (dc to 26.0 GHz, 1.25 Megohm/0.05pF)

Model 7 and Model 7A(dc to 500 Mhz, 50 ohm)

Model 7 and Model 7A(dc to 500 Mhz, 50 ohm)

Model 12C(dc to 500 Mhz, 1 Megohm/0.1pF)

Model 12C(dc to 500 Mhz, 1 Megohm/0.1pF)

Model 18C and 19C(dc to 350 Mhz, 10 femtoamps/0.02pF)

Model 18C and model 19C(dc to 350 Mhz, 10 femtoamps/0.02pF)

Model 34A (dc to 3GHz)(dc to 3.0 GHz, 10 Megohm/0.1pF)

Model 34A (dc to 3GHz)(dc to 3.0 GHz, 10 Megohm/0.1pF)

Model 28 and 29(dc to 1 Ghz, 10 femtoamps/0.04pF)

Model 28 and 29(dc to 1 Ghz, 10 femtoamps/0.04pF)