CONTRACTS

* Thermo Heating Inc. of Ventura won a $22-million contract from Nellis Air Force Base, Nev., for simplified acquisition of base engineer requirements.

* Precision Measurements of Sun Valley won a $1.6-million contract from Newark Air Force Base, Ohio, for oscilloscope digitizers and audio upgrade.

* Litton Systems Inc. of Woodland Hills won a $242,211 contract from the Navy for radio receivers.

* Courtaulds Aerospace of Glendale won a $221,642 contract from the General Services Administration for sealing compounds.