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 Commercial Products Thermometer, Classic Large Mechanical Dial, Chrome, Extreme Temperature Range for Use in Refrigerator/Freezer/Cooler/Fridge

Rubbermaid Commercial Products Thermometer, Classic Large Mechanical Dial, Chrome, Extreme Temperature Range for Use in Refrigerator/Freezer/Cooler/Fridge

Product ID: 1937334

Details

Age Range (Description)
Adult
Brand
Rubbermaid
Color
Chrome
Display Type
Dial
Included Components
1 Thermometer
Outer Material
Stainless

🔋Battery-free mechanical design

🌡️20° to 80°F / -30° to 30°C range

🛡️NSF certified for food safety

$29.79

Duties & taxes included

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Description

🌟 Keep your cool with precision that professionals trust!

BUILT TO LAST - Durable stainless steel body with shatterproof lens for professional-grade reliability.
EFFORTLESS INSTALLATION - Hang or stand it anywhere in your kitchen or commercial space with ease.
INSTANT ACCURATE TEMPERATURE - Get real-time, precise readings to guarantee food safety every time.
ECO FRIENDLY MAINTENANCE FREE - No batteries needed—mechanical dial ensures instant readings without downtime.
EXTREME TEMPERATURE VERSATILITY - Works flawlessly from freezer chills to fridge cools with a wide -30°C to 30°C range.

The Rubbermaid Commercial Classic Large Mechanical Dial Thermometer offers a robust, NSF-certified solution for monitoring refrigerator and freezer temperatures. Featuring a wide temperature range from 20°F to 80°F (-30°C to 30°C), a durable stainless steel frame, and a shatterproof lens, it delivers instant, battery-free readings ideal for both commercial kitchens and home use.

Specifications

ASIN	B005KDEFNK
Additional Features	Fast Refresh
Age Range Description	Adult
Best Sellers Rank	#448 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #11 in Refrigerator Thermometers
Brand Name	Rubbermaid Commercial Products
Color	Chrome
Customer Reviews	4.7 4.7 out of 5 stars (13,564)
Display Type	Dial
Global Trade Identification Number	00077177142901
Included Components	1 Thermometer
Indoor Outdoor Usage	Indoor
Item Length	3.75 inches
Item Type Name	Analog Thermometer
Item Weight	1.6 ounces
LowerTemperature Range	20 °F
Manufacturer	Rubbermaid Commercial Products
Model	FGR80DC
Model Name	Refrigerator/Freezer Thermometer
Outer Material	Stainless Steel
Part Number	FGR80DC
Power Source	Mechanical Thermometer
Product Care Instructions	Large display, Shatter proof lens
Resolution	1080p
Response Time	0.04 milliseconds
Reusability	Reusable
Specification Met	NSF
Style Name	Refrigerator Thermometer
UPC	077177142901
Unit Count	1 Count
Upper Temperature Range	80 °F

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