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 dial

🌡️Wide temp range 20°-80°F / -30°-30°C

🛡️NSF certified for food safety

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VT8223

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Description

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

CERTIFIED FOOD SAFE RELIABILITY - NSF approval means trusted performance in professional and home kitchens.
VERSATILE FOR ANY COOLING APPLIANCE - Perfect fit for fridges, freezers, mini-fridges, and coolers alike.
INSTANT ACCURATE TEMPERATURE READINGS - Stay ahead of food safety with real-time, precise monitoring.
EFFORTLESS INSTALLATION CLEAR DISPLAY - Large, easy-to-read dial that hangs or stands wherever you need it.
DURABLE STAINLESS STEEL SHATTERPROOF LENS - Built to last in busy kitchens—no cracks, no worries.

The Rubbermaid FGR80DC is a professional-grade, NSF-certified analog refrigerator/freezer thermometer featuring a wide temperature range (20°-80°F / -30°-30°C), durable stainless steel construction, and a shatterproof lens. Its battery-free mechanical dial provides instant, accurate readings, making it ideal for any kitchen environment—commercial or home. Compact and versatile, it easily hangs or stands for convenient monitoring of all cooling appliances.

Specifications

ASIN	B005KDEFNK
Additional Features	High Accuracy, Large Display
Age Range Description	Adult
Best Sellers Rank	#2,231 in Appliances ( See Top 100 in Appliances ) #41 in Refrigerator Thermometers
Brand Name	Rubbermaid Commercial Products
Color	Chrome
Customer Reviews	4.7 4.7 out of 5 stars (12,990)
Display Type	Analog
Global Trade Identification Number	00077177142901
Included Components	1 Thermometer
Indoor Outdoor Usage	Indoor
Item Length	15.6 Centimeters
Item Type Name	Analog Thermometer
Item Weight	0.1 Pounds
LowerTemperature Range	20 Degrees Fahrenheit
Manufacturer	Rubbermaid Commercial Products
Model	FGR80DC
Model Name	FGR80DC
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
Specification Met	NSF
Style Name	Contemporary
UPC	077177142901
Unit Count	1.0 Count
Upper Temperature Range	30 Degrees Celsius

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