The photograph above shows air sampling instruments set up inside a garage that is adjacent to the building containing the upper indoor firing range at the Royal New Zealand Police College. See the arrows.
The photograph above shows air sampling instruments set up either side of a doorway from a kitchen into lounge area in the garage. To simulate fume emissions from the firing of FX ammunition an officer stood in the doorway and fired into the lounge. An arrow shows the direction of firing the handgun.