When the editorial office was in Santa Fe, I used to measure speakers in the Delgado Street listening room, then in a dedicated room in the San Mateo office. Following the move in 2000 to New York, I decided to measure speakers in my back yard. Advantages are that without a ceiling, I can place the speaker as high as practicable to get a long anechoic window (up to 6ms), improving the midrange accuracy of my measured responses. Downside is that I have to plan my measuring activities with a close eye on the weather report. To get enough height, the speaker sits on a stand, which sits on an Outline computer-controlled turntable, which in turn sits on an open frame table. The microphone boom is made from 1/2" copper pipe (stiffened at the time of this pic with a PVC sleeve, since removed) to push back in time the inevitable reflections from the stand & hardware to beyond the equally inevitable floor bounce. I am indoors, observing the turntable's rotation through a 2.4GHz-connected video camera.