A 35-250 pF, 7 kV variable capacitor, manufactured by E.F. Johnson, part number 152-1, 34-252, is on offer. The unit is in good condition with some scratches, dirt and wear; it will need some cleaning before being put into service. The 0.25 diameter inch shaft turns easily and exhibits no slippage. There is a 0.25-inch shaft on one end and a 1.0-inch shaft on the other end.
The capacitance was measured with an Extech 380193 LCR meter. The distance between plates of opposite polarity is about 0.191 inch. The peak operating voltage (7 kV) was estimated using data from Radio Handbook, 20th Edition, William I. Orr, W6SAI, 1975, pp. 11-30. The user is encouraged to verify the peak voltage data before placing this device in service.
The 35-250 pF, 7 kV variable capacitor, manufactured by E.F. Johnson, part number 152-1, 34-252, shown in the photos, is the only item included in this listing. No cables, accessories or test equipment are included. Any test equipment shown is to demonstrate the operation of this device. The photos were taken on a 1 cm grid. I will combine multiple items together to reduce shipping costs and will mail one or two business days after receiving cleared payment.
Questions are welcome. Thanks for stopping by!