I see a few reviewers that explain how to temper chocolate using a water bath. This sounds like a very effective method. My professor would have had a small heart attack!We were never allowed to use water, or even wash our hands while tempering. Paper towels were all that were allowed. Water/steam/humidity is the enemy of chocolate and will cause it to seize...and then its not really good for much but hot cocoa. Because tempering machines are so expensive, my professor actually made some boxes for our class out of plywood, lined with thermal double-sided bubblewrap insulation (from Home Depot, $11) and used two light bulbs on dimmer switches to control the heat. Brilliant!I haven't gotten around to building one yet, so I just use a shallow cardboard box (no, really) and tape it shut. I cut out a hole big enough for the bowl, and then place a heating pad in the bottom of the box (seriously...) that is controlled with Lo, Medium and High (I did line the box with the insulation, which makes it more sensitive to the heating pad controls, but it will work without the insulation, too.). The chocolate is actually melted in the microwave (30 seconds at a time, stirring in between until the correct temp is reached), then the bowl is placed in it's cutout in the box and seeded with room temp chocolate until lowered to the correct temp (cooling can also be done by setting the bowl on a marble countertop or cool surface, even the fridge (for no more than a couple minutes at a time)...and stirring). Then, the heating pad is turned on to keep the chocolate at the correct temp while I'm working with it. With this thermometer, I actually duct taped a clamp to the side of the box and it holds the thermometer off the bottom of the bowl, so is hands free. I know...totally Mickey Mouse. But it works beautifully! The thermometer is very quick and accurate. But yes, it is a thin glass tube. Treat it gently.I make moulded chocolates with ganache centers that I sell every year for the Christmas season. They turn out with the same quality as the other professionally made chocolates in this epicurean region. When the season is over, I toss the box. The heating pad has a cover that comes off for washing. I just leave it off while I'm using it and wipe it down with a sponge after each use. Hey, you work with what you got!However, if you want to see how the professionals do it, go watch Jacques Torres' tutorials on YouTube. Bonne chance!