Save yourself the expense of a color temp meter (at least $1000), shoot RAW and adjust color temp in RAW conversion. You may want to set the camera to auto WB; it's not absolutely necessary with RAW because you can adjust it to whatever you want when you convert the RAW image, but the camera may do a reasonable job in auto WB mode.

In practical terms a color temperature meter would not identify the actual color of sources like various traditional fluorescents and the smaller CCFL now used to replace tungsten bulbs. Color temperature only measures on the red/blue axis, and fluorescent sources often emit high green or cyan light.

Motion picture and architectural interior still photographers often use colored gels to match the sources to adjust fluorescent to either daylight or tungsten standards whichever is the preferred dominant light source involved.