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Leveling Tools
this type of spirit levels can be used freely ,and also can be used to fixing to an instrument.our products including low cost instrument levels,adjustable instrument leves, high precision instrument levels an so on. you find the information on follows.you also can contact us for more information. we accept OEM order for customers and supply standard products for small quantity request.You also can press download catalog to check details.
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| History |
 The spirit level was invented by Melchisedech Thevenot (born in either 1620 or 1621; died 1692). Thevenot was an amateur scientist and patron of many scientists and mathematicians. He was wealthy and well-connected, later becoming the Royal Librarian to King Louis XIV of France. Thevenot invented the instrument some time before February 2, 1661. This date can be very accurately established from Thevenot's correspondence with scientist Christiaan Huygens. Within a year of thisdate the inventor circulated details of his invention to others,including Robert Hooke in London and Vincenzo Viviani in Florence.It is occasionally argued that these bubble levels did not come into widespread use until the beginning of the eighteenth century, the earliest surviving examples being from that time,but Adrien Auzout had recommended that the Académie Royale des Sciences take "levels of the Thevenot type" on its expedition to Madagascar in 1666. It is very likely that these levels were in use in France and elsewhere long before the turn of the century. |
| Manufacturing |
 we has been specialized in makinghigh quality measuring tools suchas Aluminium Alloy Level Ruler, Laser Level, Torpedo Level, Plastic Level and Bridge Level and so on.  The accuracy of a spirit level indicates the precision and maximum allowed deviation of the level. The stated level accuracy is a function of the straightness of the level frame, the quality and sensitivity of the vial, and the accuracy of the calibration process during the fixing of the vial to the frame. Due to our high quality, competitve price and excellent service, our products have been selling in many countries and the most important is we have deeply won the good approval from customers for our good reputation in the same industry. We always hold the policy of "Customer satisfaction". |
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