NA-0304A is suited for construction sites, factories, etc.
with a sheet of spray, as well as for long-term noise measurements.

Newly developed material and special waterproofing technology dedicated for the windscreen guarantee easy handling, only coating the microphone.
Moreover, despite of the type of all-weather, the size is world's first small.
Since raindrops cannot break into the windscreen easily, accurate measurement is possible without the influence of the water soaking through the screen.