The Deluxe version of the "Crocodile"
The viewing angle of 180° is divided into 10° units
with complete vertical divisions every 30°. Viewing
through the optical door viewer, will allow you to
measure the angular size of the sound source.
The DIY version of the "Crocodile"
The only materials that you need are a few long and
short nails, and some offcuts of plywood. The nails
are placed every 10° - the long nails being placed
in the center, at +/-30° and +/-60°. A few more
details are given in my book. [Return to Home Page]