Ludlum Model 19 Air Equipment It uses 'near frictionless' piston

It uses 'near frictionless' piston technology-- traversing a known volume to measure flow rate

Whether you need to detect combustible gases

Designed for the search and location of gas leaks

1 inch display and a powerful quad-core processor

It uses a sheath air system that isolates the aerosol in the optics chamber to keep the optics clean for improved reliability and low maintenance

Ludlum Model 19 Air Equipment It uses 'near frictionless' pistonThe Model 19 is a highly sensitive gamma R meter employing an internally housed, 2. 5 x 2. 5 cm (1. 0 x 1. 0 in.) NaI detector. The measuring range is 0 to 50 Sv h (0 to 5000 R hr).