LEV   DOMESTIC  $29   INTERNATIONAL  $32 LEVELING PLATE All of our solar radiation sensors (except the Micro QSO) can be secured into our leveling plate by means of a threaded insert in the bottom of the sensor. Three bolts are provided to assist in leveling the plate on an uneven surface.	WIRE: 2-STRAND   DOMESTIC  $1.95/m   INTERNATIONAL  $2.15/m EXTRA LEAD WIRE FOR RADIATION SENSORS    Build in additional lead wire to your sensor.  NOTE:  Three meters twisted, shielded 4-conductor wire with Santoprene casing is included in the base price of radiation sensors.	WIRE: 4-STRAND   DOMESTIC  $2.95/m   INTERNATIONAL  $3.25/m EXTRA LEAD WIRE FOR OXYGEN AND INFRARED TEMP SENSORS Add versatility to your sensor  by adding extra wire.    NOTE:  4.5 meters twisted, shielded 4-conductor wire with Santoprene casing is included in base price of all IRR models.	WIRE: 6-STRAND   DOMESTIC  $3.95/m   INTERNATIONAL  $4.35/m EXTRA LEAD WIRE FOR OXYGEN SENSOR WITH TM Extend the lead length on Oxygen Sensor Model O2S-TM. NOTE:  Three meters twisted, shielded 4-conductor wire with Santoprene casing is included in the base price of the O2S.