The SPM Instrument MG4-2 is a high-performance, multi-gas monitor designed to detect and measure the concentration of up to four gases simultaneously. It is ideal for use in a variety of applications, including industrial hygiene, environmental monitoring, and safety. The MG4-2 is equipped with a large, easy-to-read display and a user-friendly interface. It also features a built-in data logger and a variety of alarm options.

The SPM Instrument MG4-12 is a compact and portable gauss meter that measures magnetic fields from 0 to 2000 gauss. It features a large, easy-to-read LCD display and a built-in rechargeable battery. The MG4-12 is ideal for a variety of applications, including magnetic field mapping, gauss measurements, and quality control.