The TSW-22 Voltage Divider has been discontinued and replaced by the TSW-23 Voltage Divider. They are exactly the same with the exception of the TSW-23 uses Mueller style clamps in place of the probes and small alligator clips.
The Model TSW-23 Voltage Divider is a 10:1 voltage divider for use on AC or DC circuits up to 5000 Volts. It is a self contained unit designed to be used in conjunction with “Fluke” brand digital multimeter models 70, 73, 75, 77, 79, 21, 23, 25, 27, 29, 83, 85, 87, 8060A, and 8062A. Extending the voltage ranges by a factor of 10 up to 5000 Volts AC or DC. The unit plugs directly into the common and volts input jacks of the digital multimeter via banana plugs on the box. Two leads come out of the box and are terminated at their ends with 15KV rated probes and booted screw-on alligator clips. The probes and boots are color coded, red and black, and the same polarity should be observed each time the divider is used