Summary This is a casing & supporting cradle for HC-SR04 (Ultrasonic Distance Sensor). Key features: No screws or adhesive need to assemble the unit itself. The vertical angle of the HC-SR04 can easily be adjusted by tilting it up or down in the cradle. The horizontal angle can be adjusted or fixed depending on how many screws u use to secure it too whatever. For convenience the intact casing containing the HC-SR04 can easily be removed by hand from the cradle. The cradle itself is intended to be secured more permanently my screws. Printing notes: Use support structures when printing: front_00.STL back_00.STL