Rite in the Rain Transit Book - 300F Dualscope the flow rate can be

the flow rate can be changed to a low flow of 100ml per minute

This unit provides particle counts or mass PM measurements as stored datalogged values

chemical-resistant housings

structural steel

meaning you can record your video to an external device or display video on an external monitor

Rite in the Rain Transit Book - 300F Dualscope the flow rate can beA Rite in the Rain all weather hardbound field book in transit surveying format with a durable fabric cover. At 4" 7", it's a compact, pocket friendly size well suited for field crews on the move. 156 water resistant pages hold up in wet or harsh conditions standard for survey, transit, and environmental field data collection.