ETS-Lindgren HI-6153 Electric Field Probe - Manual (Page 76)

76 | H-491269 Probe Stand
2. To stabilize the tube, insert and tighten the two locking knobs into their
locations.
3. Attach the probe carrier to the tube. Insert one 1/4–20 x 3/4
thumbscrew into the end closer to the tube, and a second one at the
center of the tube. Tighten the thumbscrews.
Testing can be performed using two probes simultaneously. If you
ordered an optional second probe carrier, attach the additional probe
carrier by repeating step 3.