Difference between revisions of "Measures and weights"
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==Units of measurement in leather== | ==Units of measurement in leather== | ||
| − | [[Leather]] is a natural material and hence not available in rolls like other fabrics. For this reason, the [[Parts of the hide|external contours of the animal skin]] are too irregular. Leather is measured and calculated in square meters, decimetres, square feet (inch: inches), lengthwise or in kilograms. When speaking of leather it is common to use words like weight leather and surface leather while [[Leather straps#Leather straps - Leather laces|Leather laces]] are sold by length. | + | [[Leather]] is a natural material and hence not available in rolls like other fabrics. For this reason, the [[Parts of the hide|external contours of the animal skin]] are too irregular. Leather is measured and calculated in square meters, decimetres, square feet (inch: inches), lengthwise or in kilograms. When speaking of leather, it is common to use words like weight leather and surface leather while [[Leather straps#Leather straps - Leather laces|Leather laces]] are sold by length. |
| − | Leather [[Hide - Skin|skin]] has different [[leather quality|qualities]] within a skin making it impossible to sell the entire surface of the skin. These are sometimes cut in [[Parts of the hide|parts]] with different qualities and each [[Parts of the hide| | + | Leather [[Hide - Skin|skin]] has different [[leather quality|qualities]] within a skin making it impossible to sell the entire surface of the skin. These are sometimes cut in [[Parts of the hide|parts]] with different qualities and each [[Parts of the hide|section]] has corresponding technical terms. |
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2,95 square meters x 10,764 = 31,75 square feet | 2,95 square meters x 10,764 = 31,75 square feet | ||
| − | 45 square feet : 10,764 = 4,18 square meters | + | 45 square feet: 10,764 = 4,18 square meters |
Revision as of 17:01, 12 February 2017
Contents
Units of measurement in leather
Leather is a natural material and hence not available in rolls like other fabrics. For this reason, the external contours of the animal skin are too irregular. Leather is measured and calculated in square meters, decimetres, square feet (inch: inches), lengthwise or in kilograms. When speaking of leather, it is common to use words like weight leather and surface leather while Leather laces are sold by length.
Leather skin has different qualities within a skin making it impossible to sell the entire surface of the skin. These are sometimes cut in parts with different qualities and each section has corresponding technical terms.
Leather surface measurement
Large skins, such as bovine skins, are measured in square meters (m²). Occasionally, decimetres (dm²) are indicated. A cattle skin usually has 4.5 to 5.5 square meters. There are also larger (up to 6 sqm) and smaller skins. Leather dealers mostly sell complete and half skins. For certain purposes, further sections of the animal skin are sold. Smaller sections are reluctantly sold leading to higher waste during the cutting process.
For large hides, the measure is usually square meters. However, decimetres are also given.
In the tannery, computerised systems measure the size of the skin at the end of the leather production.
Full hide - Half hide. The division takes place along the back line.
Lamb, pork and goatskin in the clothing sector are usually measured in square feet or square inch.
The conversion factor for the conversion from square meters to square feet is 10,764, from square meters to square inch 1550,003.
Example:
2,95 square meters x 10,764 = 31,75 square feet
45 square feet: 10,764 = 4,18 square meters
For leathers sold by surface, the tanner has a great interest in trying to get the largest possible surface during tanning process.
Leather by weight
Heavy leather, such as sole leather, leather straps and bridle is calculated by weight. Also cutting waste is usually measured in kg.
Leather according to length
Reptile leather is calculated by length.
Leather thickness
The leather thickness is measured in millimetres with special measuring instruments.
Measurement of leather thickness.
Leather can be over 6 mm thick.
Additional information
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