how accurate is the thermometer? I've used one of these types before in my breville and it gave the wrong temperature of the inside of the oven.

The only way to make sure a thermometer is accurate is to calibrate it. This is done by boiling water and using the thermometer to test the water. If the thing reads 121 degrees, it is accurate. If not, then it needs to be calibrated...that is, the dial needs to be rotated in relation to the dial so it reads 212 degrees. From what I see, most dial type oven thermometers are no longer manufactered with a small nut on the back to allow calibration. Find an old one at a yeard sale and you might be able to.

The description says this thermometer is over 6" tall. That sounds rather large, can anyone confirm?

The 6 inch measurement is for the display card it is attached to. This is typical for Amazon descriptions for items of this kind. As stated in other answers, the thermometer itself is 3.5 inches tall

I'm looking at the picture...why is 0c almost lined up with 30f, shouldn't it be 32f, which it has a perfect mark for?

I received two of the refrigerator thermometers on 3/12/22 and 32F is lined up precisely with 0C. Evidently it's been fixed.

Is there Mercury in this thermometer?

No. It has a steel spring inside.

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Rubbermaid FGR80DC Refrigerator Freezer Cooler Fridge Thermometer, Classic Large Mechanical Dial, Chrome

Rubbermaid FGR80DC Refrigerator Freezer Cooler Fridge Thermometer, Classic Large Mechanical Dial, Chrome

Product ID: 255551779

Details

Age range (description)
Adult
Brand
Rubbermaid
Colour
Chrome
Included components
1 Thermometer
Special features
High Accuracy

🔋Battery-free mechanical design

🌡️Wide temp range 20°-80°F / -6°-30°C

🛡️NSF certified for food safety

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C$2064

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌟 Keep it cool, keep it safe — the pro’s choice for perfect food storage!

UNIVERSAL COMPATIBILITY - Perfectly suited for refrigerators, freezers, coolers, and mini-fridges—your all-in-one temperature guardian.
INSTANT ACCURATE READINGS - Large analog dial delivers true temperature at a glance—no guesswork, no delay.
BUILT TO LAST IN ANY KITCHEN - Durable stainless steel body with shatterproof lens stands up to daily commercial or home use.
EFFORTLESS INSTALLATION USE - Hang or stand it anywhere—no batteries, no fuss, just reliable performance.
CERTIFIED FOOD SAFETY ASSURANCE - NSF certification guarantees compliance with the highest sanitation standards for peace of mind.

The Rubbermaid FGR80DC Refrigerator Freezer Cooler Thermometer features a large, easy-to-read mechanical dial that instantly displays accurate temperatures from 20° to 80°F (–6° to 30°C). Crafted with durable stainless steel and a shatterproof lens, it’s NSF certified for safe food storage in both professional and home kitchens. Battery-free and versatile, it fits refrigerators, freezers, and coolers, ensuring your food stays perfectly chilled with zero hassle.

Specifications

ASIN	B005KDEFNK
Additional Features	High Accuracy, Large Display
Age Range Description	Adult
Age range (description)	Adult
Best Sellers Rank	#5,950 in Appliances ( See Top 100 in Appliances ) #99 in Refrigerator Thermometers
Brand	Rubbermaid Commercial Products
Brand Name	Rubbermaid Commercial Products
Color	Chrome
Colour	Chrome
Customer Reviews	4.7 out of 5 stars 13,002 Reviews
Display Type	Analog
Global Trade Identification Number	00077177142901
Included Components	1 Thermometer
Included components	1 Thermometer
Indoor Outdoor Usage	Indoor
Item Length	15.6 Centimeters
Item Type Name	Analog Thermometer
Item Weight	45 g
LowerTemperature Range	20 Degrees Fahrenheit
Manufacturer	Rubbermaid Commercial Products
Model	FGR80DC
Model Name	FGR80DC
Outer Material	Stainless Steel
Outer material	Stainless Steel
Part Number	FGR80DC
Power Source	Manual
Product Care Instructions	Wipe Clean
Resolution	1080p
Response Time	0.04 Milliseconds
Reusability	Reusable
Smart Home Compatibility	Not Smart Home Compatible
Special features	High Accuracy, Large Display
Specification Met	NSF
Style Name	Contemporary
UPC	077177142901
Unit Count	1.0 Count
Upper Temperature Range	30 Degrees Celsius

Reviews

W**I

works like it should

works like it should. reasonably priced. bought 2, one for frig and one for freezer.

10.06.2026

K**R

Cold

Metal

29.05.2020

J**P

It is working nicely in the full range and compact, elegant device.

Nil

22.02.2022

D**H

Works well

Appears to be accurate. Its well made. easy to read and easy to find a place to hang or stand it in the regrigerator or freezer. I recommend it.

4.01.2026

Y**4

ممتاز

9.11.2024

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