Yes it looks a good choice. The built in 12 bit A/D converter needs to be read using SPI which is basically clock (suppled by toggling an Arduino output) and data (reading one bit at a time on an input pin). It's cold junction compensated and has 0.25 degree C resolution.
The MAX6675 is very easy to use, I've had good results with it. It's worth the high price...almost. Especially if it's not your own money you're spending.
@macegr: Could you please post some code for interfacing the MAX6675 with the arduino? I'm new to electronics and programming and I haven't had success getting it to work. I really need it all spelled out like I'm a four year old.
The AD595 chip does not do the A/D conversion. It's accuracy sucks compared to the other one. Neither chip will do the full range of a type K so don't be smelting metal or working with glass.
Hi,
Would there be any benefit or would it be easier to use the AD595?