Convection and Ventilation Box is the standard device for demonstrating convection currents and ventilation.
When a lighted candle is placed under one chimney and a smoking paper is held over the other, the convection current may easily be seen. The precepts of ventilation may also be shown by covering the chimneys and removing, in various combinations, the corks in the side panels.
Wabash Model #GS-10.
GForensics Lab Supply Number 3178810.
Formerly Grau-Hall Corporation dba Grau-Hall Scientific.
Purchase orders may be sent by email to Staff @ grauhall.com or by FAX to 916 379 9639 or by mail to P. O. Box 279592, Sacramento, CA 95827-9592.
All products shipped from Wabash, Indiana.