Geratherm Mercury Free Oral Glass Thermometer, 1 Count (Pack of 1)

Works perfect absolutely no problems with it I trust this the most

Update: Second order APPEARED BROKEN but wasn't. My first purchase was fine: 'blue line" was visible front and center, and it "shook down" just fine. I ordered a second and couldn't see a "blue line" except from the side, and I couldn't "shake down" that side-visible line. Following another reviewer's suggestion, I took my own temperature with this 'broken" item and the proper blue line appeared, front and center. SO, for those who think their item is broken, try taking someone's temperature for 3-4 minutes to see if the blue line appears, and THEN shake it down.Orig: Unlike other reviewers, I had no more trouble shaking down this thermometer than my "old fashioned" glass mercury thermometer. It does take quite a snap, but they always did, didn't they? I put this and my mercury thermometer in two sides of my mouth at the same time and they measured within about 0.8 degrees of each other. (In other words, less than 1 degree F apart, which is good enough for me as I don't know which is more accurate or whether the two sides of my mouth were diff't.) I DO shake it over my lap with a blanket or over something soft in case it accidentally comes flying out of my fingers. It's glass according to this product site, but so lightweight I couldn't tell whether it was plastic or glass. The cap is neat - look inside it to see 'fins' that you can ease the wide end of the thermometer into such that the cap will hold it, even placing the cap upside down. I find this handy to air dry completely after washing it since I don't want to cap it with moisture inside (tho case has a hole at bottom so it's not airtight, which is good). I was thrilled to find these for my roving first aid kit since: (1) I didn't want to depend on batteries for a vital tool that may not get used for months/years at a time, esp while camping in remote areas, and (2) This item is much smaller than the typical digital thermometer, for storing in a tiny kit, and (3) I'm presuming this item is more accurate than the "average" digital thermometer, since I've researched, purchased, and used several digital thermometers and they were frequently 2 or more degrees off from each other. This brand seems high quality from the wee bit I've read about them.

What a piece of total JUNK! I ordered this recently and finally got around to wanting to use it this morning. I started to shake it down first, and the inner part was rattling against the glass enclosure. Then the tip (the part that goes in your mouth) flew off! DO NOT BUY!

SEP 28, 2020 -- I compared five medical fever thermometers, patient awake (20 minutes after waking), in bed, under a sheet and light blanket. RESULT: the range is 96.3 to 97.7 degrees --- or if the LEAST trusted is removed, the range is 96.8 to 97.7 degrees, which is a total range of 0.9 degrees, with the old classic glass mercury oral thermometer in the center of the range. The two non-digital, glass ORAL thermometers were closest to the center of the range.SORTED HIGH to LOW temperature readings:97.7 degrees = Vicks ComfortFlex Digital ORAL Thermometer model V966US -- for Kids or Adults, for Rectal, Oral or Underarm Use (UPC code 328785509656, ASIN B00005RL5E, purchased SEP 2020).97.6 degrees = DGFAN model FC-IR202 -- digital Touchless FOREHEAD Thermometer with Instant Accurate Reading and Fever Alarm and Memory Function- for Baby & Adults (ASIN B08CSPSX33, purchased SEP 2020) -- (same as GoodBaby Touchless Forehead Thermometer model FC-IR202. UPC code 756557935295.)(MOST TRUSTED) = 97.1 degrees = B-D Asepto model 4015 -- ORAL Fever Thermometer (a glass, mercury oral thermometer purchased in 1985) inserted under tongue for 4 minutes. (Becton, Dickinson, and Company. UPC code 382900040158. Certified, dependable accuracy since 1897.)96.8 degrees = Geratherm Classic Clinical ORAL Thermometer -- Mercury-Free Glass Thermometer, inserted under tongue for 4 minutes. Instead of mercury, this thermometer contains Galinstan, which is a liquid metal alloy mainly composed of gallium, indium and tin. (ASIN B0006GBEKS, purchased SEP 2020, made in Germany -- ships from and sold by PISPO in Germany. UPC code 4018674454889.) Amazon.com description says: Brand/Manufacturer: R G MEDICALISES, model 20030, but neither the box nor the thermometer shows any model number, and the box and the paper insert both say the manufacturer is Geratherm Medical AG.)(LEAST TRUSTED) = 96.3 degrees = Enji Family Digital ORAL Thermometer model TH-65 -- Oral Rectal Armpit Underarm Thermometer for Adults and for Fever, Quick 10-30 Sec, Baby Infant Kid Babies and Pet (ASIN B0172N4F6C, purchased FEB 2017)~~~~~~~~~~~~~~~~~Just for curiosity (this is NOT a medical or fever thermometer):93.6 degrees on forehead = Etekcity Lasergrip 1080 non-contact Digital Laser Infrared Thermometer Temperature Gun (ASIN B00DMI632G, purchased June 2017.)

You know the difference between an oral and a rectal thermometer? It's definitely the taste!

I have had these for a few years now and they are great.I am writing this to address the "Shake Down" issues people have. These aren't the best for shaking down to reset them so place them in a sock (while in the case) bulb down and give it a good centrifical spin and it will reset in little time with minimal effort.May the centrifical force be with you...