It's the only digital thermometer I've used. I had the adhesive kind the 10 gallon came with (in a kit) stuck to the inside glass, but after a few days I found it hard to see which indicator was indicating. I couldn't read it very well.
Since I'm in transition between my 10 and 20 gallon aquarium, I bought another identical thermometer. Before putting it in the 20, I put the probe into the 10 to see if they both measured the same temperature. They were within .5 degrees (F) of each other. Close enough for me!
I finally got a handle on the whole aquarium now. I just made a few adjustments and the sand on left side seems to be a lot more stable now.
PLUS, UPS finally brought my hood this evening. Pictures are slightly improved, but otherwise it of course makes everything look so much better standing next to it.
Observe:
For clarification regarding my signature, in the 20 gallon I have the live plants and the 3 platies, and 3 ghost shrimp. (I read they have a low bioload so I'm not too concerned about them in the cycling water.)
In the 10 gallon aquarium, are the rest of my fish that will eventually be moved to the larger water.
The 2 loaches, Creepy and Crawly. The ballon molly, Chubby. And Slim, the marble molly.

It has a lot more color in it, but I prefer the realistic look that's coming along with the 20 gallon. I'll be giving this one away. I'm contemplating getting a small hospital after I get rid of it. I'd probably plant it up crazy.