The 50DR-141 dual rotary attenuator features two manual knobs. The small knob is 1 dB step and the large knob is 10 dB step. It is available with 50 Ohm coaxial N or SMA female RF connectors. The attenuator has four mounting holes in the front plate to allow for panel mounting.
For additional information on the 50DR-141, download the available datasheet.