What equipment might be used during the emissions check?

The emission analyzer is the appropriate piece of equipment used during an emissions check because it is specifically designed to measure the concentration of harmful pollutants in a vehicle's exhaust gases. This tool assesses whether the vehicle meets the required emissions standards set by regulatory agencies, providing data on various emissions components such as hydrocarbons, carbon monoxide, and nitrogen oxides. By analyzing these emissions, inspectors can determine the vehicle's compliance with environmental regulations and identify any necessary repairs or adjustments to reduce pollution.

While speedometers, fuel gauges, and temperature gauges provide valuable information regarding a vehicle's performance and operational status, they do not measure emissions or pollutant levels, which is the primary focus of emissions testing.