3A AIR CON AND ENGINEERING SERVICES

This sub-class includes the manufacture and/or repair of engineering and/or scientific instruments. This sub-class includes the manufacture and/or repair of: - aircraft instruments (except engine) automotive emissions testing equipment - physical properties testing and/or inspection equipment - electron and/or proton microscopes - surveying instruments - search, detection, navigation, aeronautical and/or nautical equipment, including sonar buoys - radar equipment - GPS devices - measuring and/or recording equipment (e.g., flight recorders) - laboratory scales, balances, incubators, and miscellaneous laboratory apparatus for measuring, testing, etc.