GPS Garmin GPS Map 64 : Global Positioning System (GPS), to determine the location of the teams in the field Anemometer : Electronic Anemometer to measure the speed or velocity of airflow Chronometer : Electronic Chronometer to measure time of some events in the field with accuracy Compass : Rugged Compass to shows the cardinal directions and for navigation and geographic orientation Magnifier : Classic pocket Magnifier to makes something appear larger (in this case : insects’ details) Psychrometer : Electronic Psychrometer to measure air temperature and humidity Tally counter : Mechanical Tally counter to incrementally count the numbers (in this case : insects’ details)