Menu
Cart 0

BellClocks News & Information — thermometer

Unique D&D Nautical Tendency Barometer, Great Gift Idea and On Sale Now!

Posted by on

Unique D&D Nautical Tendency Barometer, Great Gift Idea and On Sale Now!

The D&D Barometers of Belgium A046 - Nautical Tendency Barometer with Thermometer - a unique instrument, and presentation quality. The Tendency Barometer was patented on December 23, 1818 by Alexander Adie. It consists of two liquid filled tubes. One tube in a U-shaped which is open ended and filled with a red, non-mercury fluid; and one closed thermometer tube filled with a blue fluid, mounted parallel to each other. When the fluid levels are the same, the weather is changing. When the red fluid level is below the blue fluid level, the weather is fair (high pressure pushes the red fluid down in the...

Read more →

CYBER MONDAY SALE, D&D Barometers Eco Celli Liquid Barometer Thermometer

Posted by on

CYBER MONDAY SALE, D&D Barometers Eco Celli Liquid Barometer Thermometer

The D&D Barometers Eco Celli Liquid Barometer Thermometer model E038 features a tough acrylic frame, is mercury free, and perfect for home or school. NEW and ON SALE NOW! Liquid barometers definitely have a place in our schools as a teaching device allowing students to actually see the affects of atmospheric pressure on the liquid in the barometer. An electronic digital barometer cannot provide this visual reinforcement as all the students see are numbers changing, much like a digital clock. The problem with liquid barometers is that they are made using mercury, which has been proven to be an extremely...

Read more →

Misol Professional Wireless Internet Weather Station, WiFi, Color Touch Panel Display, ON SALE

Posted by on

Misol Professional Wireless Internet Weather Station, WiFi, Color Touch Panel Display, ON SALE

Misol Professional Wireless Internet Weather Station, WiFi, Color Touch Panel Display. Introductory Pricing!   Makes a Great Gift at a Great Price! PRODUCT DETAILS: ESTIMATED DELIVERY TIME is 12-24 Days. Features:   1. Color display 2. Touch Panel 3. It can connect to Wi-Fi, and upload the data to web: www.wunderground.com, www.weathercloud.net 4. Indoor/outdoor Temperature in C/F selectable 5. Indoor /outdoor Humidity 6. Display wind speed, gust and wind direction 7. Wind speed in ms, km/h, mph, knots and bft (accuracy: <10m/s: +/-1m/s, >=10m/s: 10%) 8. Rainfall in inch, mm (accuracy: +/-10%)  9. Display rainfall in rate, event, day, week, month and total. 10. Independent alerts for...

Read more →

D & D Barometer Ship's Hull Tendency Barometer is ON SALE!

Posted by on

D & D Barometer Ship's Hull Tendency Barometer is ON SALE!

The D&D Barometers Ship's Hull Tendency Barometer with Thermometer is a very unique instrument! This nautical version of the Tendency Barometer consists of two liquid filled tubes.  The unique horizontal U-shaped barometer tube is open-ended and is filled with a red fluid.  The closed thermometer tube is filled with blue methyl alcohol.  Since both tubes are exposed to the same temperature, the only thing making the fluid levels different is the atmospheric pressure on the open-ended barometer tube.When the fluid levels are the same, the weather is changing.   When the red fluid level is to the left of blue fluid level, the weather is fair (high...

Read more →

D&D Barometers Deluxe Tendency Barometer On Sale!

Posted by on

D&D Barometers Deluxe Tendency Barometer On Sale!

D&D Barometers Deluxe Tendency Barometer, A053 - Imported from Belgium, the A053 is a Combination Tendency Barometer with Thermometer, Hygrometer and Stormglass, of presentation quality. Makes a great gift - and is On Sale Now!.   The D&D A053 is a unique model, combining all of the best features of the Tendency Barometers and is the top of the line. It functionally operates as any other D&D Barometer tendency barometers. The beautiful mahogany stained wooden case with curved glass has an aluminum colored brass face plate with a Storm Glass mounted beside the tendency barometer tubes and a hygrometer mounted...

Read more →