360 Degree Sonar Testing Mount for HC-SR04

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/hzHeK1jUVzB

I made this to I test HC-SR04 Ultrasonic Sensor with full 360 degree range of motion.
The goal:
To see if I can build a device that make a guess about what room of my house it is in by creating a 360 degree 2d profile and comparing it to pool profiles.

3/32" x 1 3/16" steel rod
HC-SR04
Mini Servo (Radio Shack) Not SG90, the Radio Shack servo is smaller.

Thanks to Will Hughes for the