Environmental Express Oakton pH 100 Portable pH Meter UX-35613-25 NO PROBE

Winland EnviroAlert EA400-12 Environmental Monitoring Alarm

Psychro-Dyne- Psychrometer - Environmental Tect. Corp ( G-G)

Environmental Tectonics CP-147 Psychro-Dial Psychrometric Chart - USED

Environmental Tectonics CP-147 Psychro-Dial Psychrometric Chart

Psychro-Dyne Battery Operated Portable Test Device - Environmental Tectonics Co.

LOT OF 3 X AVTECH ROOM ALERT 3E ENVIRONMENTAL MONITOR With 2 Adaptors @2B

PeakTech Environmental Meter (4-in-1)