NOS. Quality vintage Marine equipment ….open box but never used.

The Tempo Marine Gas Vapor Detector, model 577 FD Gas Vapor Detector, is a reliable and high-quality gas detector designed for marine environments. With the brand's reputation for producing durable and accurate measurement tools, this gas vapor detector ensures the safety and efficiency of marine operations. This device is essential for detecting harmful gas vapors and maintaining a safe working environment on the water.