The infrared source and detector in the photogate are permanently aligned in a rugged, machined phenolic housing.
The opening in the photogate between the source and the detector is 6.3cm wide by 5.9cm high. Each plug-in photogate has 180cm of cable and a stainless steel mounting arm (the tripod, post and clamp are not included).
Intended for use with Photogate Timer #GS-332 with which it is shown and which will operated with either one or two photogates.
Forensics Lab Supply Number 3178331.
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.