Geratherm Mercury Free Oral Glass Thermometer, Pack of 2

Much better than some other non-electronic thermometers that I tried. Keep (and use) the plastic shaker that comes with them. It still takes some vigorous shaking, but the plastic handle does make it easier to shake down the liquid inside.

I agree with other reviewers that those who complain are probably revealing their inexperience with glass thermometers. I bought the two pack, and their readings are consistent with each other, and they yield temperature readings very close to my better digital thermometers.You need to shake down the liquid before taking a reading. The liquid in this thermometer is significantly more difficult to shake down than the old mercury thermometers, I presume because mercury is much more dense than this liquid. One reader said it works to put it in a sock and swinging it rapidly.Also, they are fairly slow. It takes 2 or 3 minutes to get a good reading.The drawbacks are simply due to the nature of glass thermometers. However, the fact that they don't need batteries means they will always work. The batteries in digital thermometers seem to give out at the most inopportune times, so it's really nice to have a glass thermometer handy as a backup.Note: Amazon's "Rate Features" section for this thermometer had "Accuracy," (which is fine), and "Warmth," and "Thickness," (which is just plain weird).

I thought it didn't work at first, but I forgot to shake the fluid down. It's been a long time since I used one of these.

This isn't 5 stars because the bulky shape can make it difficult to keep the probe in place for 3 minutes. If it slips, accuracy suffers so I will reset and try again. Aside from that, I find it to be accurate and easy to read in Celsius; the "98.6" marking on the Fahrenheit side can be distracting. I have a hospital-style corded digital thermometer but I use this more consistently because it's simpler, smaller, handier.For shaking down the thermometer, 5 or 6 strong wrist flicks work for me. At first it seemed to take extra effort, but I think I just wasn't using enough snap. I also make sure the silver tip is pointed toward the ground. I would buy this again and recommend it to others.

I had the same experience some other reviewers noted that these thermometers worked the first 2 times we used them, but after that now they will no longer change from wherever they were shaken down to -- they will no longer indicate temperature. And now the return window is closed. Don't waste your money! If you use them a couple times and then are depending on them if you or your child are sick the next time and they don't work, you'll be out of luck. They were also immensely difficult to shake down after the two times they did work. We had to put them in a sock and use centrifugal force because shaking them down by hand was futile (and we've always been able to shake other thermometers in the past.) I'd give zero stars if it were an option -- thermometers need to be reliable!

I’ve seen the negative reviews about the line not going down and I thought I was in the same boat. But I discovered two things: 1) you have to rotate it back and forth to catch the correct angle to actually view the reading. Otherwise it looks maxed out. And 2) it takes way more than a few shakes to get it to go down. Hold on tight and wag that thing for 60 seconds and it will work.I calibrated it against our rapid digital thermometer. It reads a half degree warmer. But readings from this device are more consistent.

I love the old fashioned simplicity of this product. No batteries to wear out or wonder about… no error messages… just stick it under your tongue and wait a few minutes. Then look at it again. My instinct is to trust German precision engineering and manufacturing. I’ve had one of these for many years, but one time had trouble finding it in my bedroom for awhile. So I decided to get a couple extra to have on hand just in case anything should really happen to the one I had. Grateful to find this product still being sold.

Very accurate, but will break if dropped on the floor even when placed inside its case, which makes them suitable for careful adults only.

مقياس حرارة خالي من الزئبقويعطي درجة واضحةهذا النوع مُناسب للكبار حيث يستخدم في الفم وتحت الأبط فقط