42 Engineering and consultation services related thereto for others in the fields of transportation systems, vehicle testing, vehicle instrumentation, wind power, solar panels, oil and gas, testing equipment, transducers, slip ring assemblies, electronics, fiber-optic systems, telemetry and instrumentation assemblies; design and consultation services related thereto for others in the fields of transportation systems, vehicle testing products, vehicle instrumentation, wind power products, solar panels, oil and gas equipment, testing equipment, transducers, slip ring assemblies, electronics, fiber-optic systems, telemetry equipment and instrumentation assemblies