Calabasas-based National Technical Systems, the provider of testing and engineering services, said this morning that it has acquired Lighting Technologies, an engineering services and testing laboratory. NTS said it paid $6M in cash plus up to $1M in earn out for Lighting Technologies. Lighting Technologies is based in Pittsfield, Mass. NTS said Lighting Technologies had sales of approximately $4.6M in the 12 months ended July 31st.