Rite in the Rain Transit Book - 300F Dualscope as it allows a sample

as it allows a sample to be obtained which is untouched by the oil

sensitivity

chemical-resistant housings

The Solinst Tag Line uses a weight attached to a laser marked cable or tape

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

Rite in the Rain Transit Book - 300F Dualscope as it allows a sampleA 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.