---
product_id: 37670130
title: "Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument"
brand: "allivan marketing"
price: "€ 45.47"
currency: EUR
in_stock: false
reviews_count: 3
url: https://www.desertcart.hr/products/37670130-tendency-barometer-admiral-fitzroy-storm-glass-hygrometer-historical-weather-instrument
store_origin: HR
region: Croatia
---

# Made in Belgium 20" Height Liquid Thermometer Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument

**Brand:** allivan marketing
**Price:** € 45.47
**Availability:** ❌ Out of Stock

## Summary

> 🌪️ Weather the Storm in Style!

## Quick Answers

- **What is this?** Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument by allivan marketing
- **How much does it cost?** € 45.47 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/37670130-tendency-barometer-admiral-fitzroy-storm-glass-hygrometer-historical-weather-instrument)

## Best For

- allivan marketing enthusiasts

## Why This Product

- Trusted allivan marketing brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Historical Charm:** Own a piece of history with this vintage-inspired weather instrument.
- • **Elevate Your Space:** Transform your decor with this stunning mahogany piece.
- • **Conversation Starter:** Impress guests with this unique blend of art and science.
- • **Precision Measurement:** Accurate readings for temperature and humidity at your fingertips.
- • **Craftsmanship You Can Trust:** Expertly crafted in Belgium for quality you can rely on.

## Overview

The Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer is a beautifully crafted weather instrument made from mahogany wood with a curved glass front. Measuring 20 inches in height and 6.7 inches in width, it features a liquid thermometer and dial hygrometer, making it both a functional and decorative addition to any space. Proudly made in Belgium, this piece combines historical significance with modern precision.

## Description

The Model A053 combines all of the best features of the Tendency Barometers and is the top of the line. It functionally operates as any other of our 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 above the tubes. The Tendency Barometer was patented on December 23, 1818 by Alexander Adie. It was used by James Clark Ross on his expeditions to Antarctica. He is quoted in his diary as saying " the advantage of the tendency barometer to a mercury barometer is as big as having a mercury barometer to having no barometer at all." It consists of two liquid filled tubes. One tube in a U-shaped which is open ended and filled with a red 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 tube). When the red fluid level is above the blue, stormy weather is predicted (low pressure allows the red fluid to move up the tube). The thermometer measures in both Celsius and Fahrenheit and the barometer measures in millbars/ hPa. The overall instrument measures 20 inches high by 6.7 inches wide and weighs 3 pounds. This tendency barometer is an absolutely beautiful presentation piece that will last for generations.

## Features

- Mahogany Wood with Curved Glass Front
- Tendency Barometer
- Liquid Thermometer & Dial Hygrometer
- Measures 20" H by 6.7" W. - Made in Belgium
- Please read description below.

## Images

![Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument - Image 1](https://m.media-amazon.com/images/I/61RbIXLx2KL.jpg)
![Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument - Image 2](https://m.media-amazon.com/images/I/71MLPD+qKWL.jpg)
![Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument - Image 3](https://m.media-amazon.com/images/I/91PhqJqdhtL.jpg)
![Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument - Image 4](https://m.media-amazon.com/images/I/71VUK29qRuL.jpg)
![Tendency Barometer Admiral Fitzroy Storm Glass Hygrometer Historical Weather Instrument - Image 5](https://m.media-amazon.com/images/I/71pojj4arbL.jpg)

## Questions & Answers

**Q: How is this shipped?  What happens to the mercury if it is upside down?**
A: ships via FedEx Ground. Barometer is mercury free. Red fluid is sealed in tube for shipping

**Q: How the red liquid indicate pressure in millibars?  It appears to simply use the same scale as the thermometer.**
A: A Tendency Barometer consists mainly of two parts:  A U-shaped tube (red fluid) and a thermometer (blue fluid).  The red fluid rises or falls according to changes in air pressure.  The U-shaped tube is also influenced by temperature, which is the reason why the combination with the thermometer is required.  All temperature deviations during the reading of the pressure tendency will be corrected.  All you need to do is to compare the level of the red fluid to the blue fluid.  The difference between both fluid levels (use the Celsius scale to take difference readings) is set with the pointer on the Tendency Slider, seen in your picture on the right side of the barometer case.  The changes in air pressure can be easily observed and a forecast made.

Example: When the red fluid is 6 lines below the blue fluid. -6 (remember, use the Celsius scale to take the difference) the weather forecast is for Fair Weather.  When the red fluid is 8 lines above the blue, +8, the forecast is Rainy or Stormy.

When the red and blue fluid levels are equal, the weather condition is Change. Red fluid below the blue fluid, Good Weather (high pressure).  Red fluid above the blue fluid, Bad Weather (low pressure)

You can also take actual pressure readings in hPa, which is the equivalent to millibars.  The pressure level in millibars is printed along the Tendency Slider on the right hand side of the case.  Simply turn the brass slider knob towards you to loosen it and move the slider to the proper position and retighten.  This also allows you to see the pressure change since your last observation.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome!
*by T***H on May 30, 2009*

A rather remarkable piece of equipment. Though it's quite attractive it's also completely functional and provides entirely accurate data. It's the real thing and clearly intended for those of us who wouldn't even consider hanging a replica rifle over our fireplace. It comes with a calibration kit and very simple instructions for adjusting the barometer to local elevation and calibration of the hygrometer. The storm glass is quite fascinating. It's larger than it appears in the photo and very easy to examine crystal behavior. It's been pretty rainy here of late and I noticed that within hours of arrival the storm glass became quite cloudy with suspended crystals near the top with sparkles suspended below. Pretty neat! Glad I spent the money for it, hung it in my living room and wouldn't hesitate to recommend it to others. The only drawback.... I've spent quite a bit of time since it arrived, standing, facing the wall, staring at it. Wife doesn't seem to mind though.

### ⭐⭐⭐ Disappointed with the storm glass
*by S***N on May 2, 2011*

The instrument itself is beautiful. I was disappointed to learn that the storm glass is not really functional, it takes a lot away from the overall purchase.

### ⭐⭐⭐⭐ Ease of Calibration Access
*by J***S on March 17, 2015*

Instructions not clear for settings, not designed well for easy of access to make calibration adjustments. You have to remove the entire assembly from the wall, take the back panel off to acccess the instruments for calibration. It should have been designed with a hinged door accessing the instruments after they are mounted especially as expensive as this weather instrument is.

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-11*