The Weather Forecast Glass Barometer came into general use during the 1700s and was in widespread use for nearly 250 years. Sailors attached this instrument to the mast of their ship and by interpretation of the constantly changing crystal formations, relied upon it to forecast good weather and bad. He refined the formula and published observational guidelines which are also included with each Weather Forecast glass.
1) If there are large flakes throughout the liquid, it will be overcast in temperate seasons or snowy in the winter. 
2) If there are threads near the top, it will be warming or windy. 
3) If the liquid contains small stars on sunny winter days, then snow is coming. 
4) If there are crystals at the bottom, this indicates frost. 
5) A cloudy glass with small stars indicates thunderstorms. 
6) If the liquid in the glass is clear, the weather will be bright and clear.

A:For packaging,commonly we use styrofoam packing with brown box,and if your order could reach 2000pcs,we can provide free color box to you.

B:For shipping, Sea or air shipment is for customer's selection.

Established in 1997, Yancheng Glassman Arts & Crafts continues to be a leading company in the fields of glass Galileo Thermometers, Crookes Radiometers, glass sand timers, sand pendulums, neon tubes and neon clocks. We consistently launch new and innovative items that appeal to diverse markets worldwide.

Our company employs 230 people and has been recognized for social and industrial compliance through achieving ISO9001 and SA8000 certification. In 2007 we invested USD $6,000,000.00 to build a modern factory of about 42,000 square meters to house our office, manufacturing, packaging and quality control departments together on one campus. Our quality control of both general items and scientific instruments is regarded as the best in the industry thanks to the neatness of our workshops and our years of experience. Our products have been distributed by famous supermarkets worldwide including Wal-Mart, Carrefour and Lidl as well as numerous distributors with demands of the highest quality.

If you are interested in any of our products please feel free to contact us for more information. We invite you to join us in developing a beautiful future together!

1) Most of our company’s products are pure handmade. It’s lampworking.

2) Products are made of non-toxic harmless components. Our products are quite safe.

3) We have our own factory so delivery could be within agreed time. We are punctual and trustworthy.

4) Our product line is rich and the output is big. Support to meet the different needs of different customers.

5) New product design development, production and export of foreign enterprises. Advanced production technology, innovative design.

6) The product of our company is a new technology products, timing, and forecast the weather and temperature display. The technology is advanced.

7) Our company insists on independent development and production, it is helpful for the staff to be familiar with the products, improve the export profits, understand the market changes.

8) The glass we used is borosilicate glass. Its low expansion rate, high temperature, high strength, high hardness, high transmittance and high chemical stability characteristics make it become the good performance glass.