In history, the earliest developed gas stove was the Frenchman Philip Ruben, who obtained the patent for gas-fired and heating dual-use devices on September 21, 1799. In the second year, Ruben spent money on installing this equipment in a restaurant in Paris. Because the gas stove developed by Ruben at that time would give off an unpleasant smell, it was not popular at the beginning and was not promoted. Despite this, he continued to research and improve the device with great enthusiasm. In 1804, on the day of the coronation of Napoleon, Ruben was killed in a street in Paris, and the development of the gas stove was interrupted.

The world's first gas cooker for kitchen cooking was invented in 1826 by James Schaff, deputy manager of the Northampton Gas Company in the UK. He installed the gas stove he invented in his own kitchen to cook the meat. This is a vertical stove consisting of a hook hanging from the ceiling for hanging meat and a circle-shaped fire mouth below. There is no stove for the pan.

The first to buy a gas stove was a bus inn in Leamington, France. In 1834, the bus hotel used a gas stove to make dinner for 100 people. Not only did the food taste delicious, but it did not have the smell of gas. It was an ideal stove. In the summer of 1836, a factory of 35 workers was opened in Northampton, England, specializing in the production of gas stoves.

In 1852, the stoves used to combine the gas burner and the stove were used for sale. In 1915, a gas stove with thermostat control began to appear.

In 1855, the German chemist Bunsen invented a gas burner called "Bunsen burner", which is a device that combines oxygen and flammable gases to produce high temperatures. Less than a year after the birth of the Bunsen burner, the British company Hoddington Anton Smith invented the world's first gas-fired domestic heating device. Later, the gradual popularization of gas stoves and the supply of gas, formed today's gas cookers.

Inch Tape Measure

Commonly used distance measurement methods include tape measure distance and photoelectric distance measurement. The measuring distance of a tape measure is measured along the ground using a tape-like ruler that can be rolled up, which is a direct measuring distance. Photoelectric ranging is to use an instrument to transmit and receive modulated light waves between two points, and measure the distance according to its propagation speed and time. It belongs to electronic physical ranging. Photoelectric ranging is indirect ranging.

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