heatsink thermometer

[o0jmadr0x0o]

would this give me a good idea of how hot my heatsink is getting ?

http://www.ebay.com/itm/Pointer-Dig...ltDomain_0&hash=item3379dd3960#ht_3913wt_1397

could i just electrical tape it to the base of the heatsink in between the fins? or drill a small hole for the sensor and put it in there?
what are the rest of you using?

 

[o0jmadr0x0o]

bump