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R G Medicalises Geratherm Thermometer, Mercury-Free Oral
- easy to read
- clinical accuracy
- Enviormentally friend nonm-toxic
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Top Customer Reviews
When I purchased this, I compared it to the Hg thermometer, since I have one and I was curious about the new Hg substitute. First, I put them both under my tongue simultaneously. This one read about 2 degrees lower than the Hg standard. I thought that its larger size might have allowed air to get by my lips & cool it. I then did two back-to-back measurements; Geratherm, Hg; Geratherm, Hg. Four minutes each, all at rest, one immediately after the other, and always placing them in the same location. Both devices were "internally" consistent - that is the Hg gave the same temp both times, sequentially, as did the Geratherm. So far, so good. Consistency is necessary in a measuring instrument. HOWEVER, on both occasions the Geratherm now measured a full two (2) degrees HIGHER than the Hg! NOT good! I then checked my temp using the oral electronic probe; it was 0.2 degrees off from the Hg. I then used the ear probe (both ears) and surprisingly it, too, was actually very close to the Hg (0.2 degrees difference between the 2 ears; average 0.3 degrees off from Hg, just a bit lower otic (ear) than oral).
For this reason, I'm returning it, and I'm going to try another one. I suspect that it's a manufacturing defect explained by the construction of this thermometer - it's a glass tube within a second glass housing, and there's a paper scale behind the capillary tube containing the liquid.Read more ›
You do have to shake it quite a bit - hold it at the very tip (not the end you put in your mouth) and flick it down with 20 rapid wrist movements. I have to get mine all the way down to the bottom as I consistently run low temps due to my hypothyroidism. So I must do 20 wrist flicks about three times. It works great. Ignore the blue line comments.
Another possibility is that people are reading this wrong. The most annoying thing about glass tube thermometers when they were filled with mercury was that you had to hold them on a special angle or you would see the whole thing have a red line or no line at all. Same deal with this thing, only it's blue/silver. If this isn't working for you, go Google someone shaking a mercury thermometer or go rent an old movie and watch a nurse do it. Then try rotating the glass tube slowly, while you look at it, until you see different lines. One of those lines is the thing you're supposed to be looking it.
It's amazing that knowledge was considered so trivial in the past but now it's virtually gone.
Most Recent Customer Reviews
I purchased this thermometer with great hopes. Had so much trouble shaking it down maybe at least 50 times and it finally started coming down, but my upper arm in the end was very... Read morePublished 7 days ago by Karen Waters
Decent quality, came quickly. Should be fine for intermittent usePublished 17 days ago by Amazon Customer
Shipped from England so I thought it was going to take long. Nope. Was here in a week. Looks great. No more runningrunning out off batteries.Published 1 month ago by John R. Lanc
It is hard to use it. To drop off the temperature you need to be a Hulk.Published 1 month ago by Amazon Customer
Works really well. Has a learning curve but is easily learnt.
Learn to flick the thermometer by holding it firmly at the top end (not the "mercury" end) and... Read more
Looks like a great thermometer! Backup is always good to have , good old reliable thermometers!Published 3 months ago by Dana 40
This thermometer was not useful at all. My son was having fever. I compared the temperature between this thermometer & digital. Even though his fever was high, this showed 100.4. Read morePublished 4 months ago by Badri
Best thing I could find that came close to an old-school mercury thermometer.Published 4 months ago by RaRaD