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100mL Glass Graduated Cylinder Measuring Single Metric

GH₵ 214.00
GH₵ 274.0022%

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Product details

Scales are also called "weighing". weighing apparatus. Or the instruments that measure the weight of the unequal arms are called scales, or they refer to the tie-bar scales that measure the weight of the object by looking at the scales, or the single-fingered scale bar. During the Warring States Period, there were already unequal arm weighing instruments. When the domestic steelyard began, there is no conclusion. The unearthed copper balance rod of the King of Chu has ten equal scales. It is presumed that it is used as a sign for hanging weights and weights in different parts during weighing. . After the Eastern Han Dynasty, it evolved into a scale that looks at the weight from the scale star. Scale chèng phonetic. Words from Wo, from Ping. "Ping" means "repression", "pressing down". "He" means "five grains". "He" and "ping" are combined to mean "grains are pressed down".
Original meaning: the weight of grains.
Escape: To weigh the grain. Apparatus to measure the weight: City ~. pounds ~. ~ Mound.
Pronunciation: Libra (chèng) does not read Libra (píng) constellation.
Steelyard
It is a small weighing instrument with a wooden pole or metal pole with star point and taper as the main body, and equipped with a weight (weight), a weight rope and a weighing pan (or weighing hook). According to the scope of use and the size of the scale, it is divided into three types: tumbler, pan scale and hook scale. The steelyard is a first-class arm lever, which is a simple weighing instrument that uses the principle of lever balance to weigh the weight.
Steelyards consist of levers of the first type, the focus of which is on the outer end of the fulcrum. When weighing, according to the weight of the object to be weighed, the weight and the weight rope are moved on the scale rod to maintain balance. According to the star point on the scale bar corresponding to the weight rope when balancing, the mass indication value of the object to be weighed can be read out. The steelyard scale is simple in structure and manufacturing process, light and small, easy to carry and use, low in cost, but low in accuracy.
The steelyard is the oldest one among the various weighing instruments invented by human beings. Among the cultural relics unearthed before 700 BC from the tomb of Chu in the eastern suburbs of Changsha, Hunan, China, there are various refined weights, scales, scales, silk threads and ropes tied to the scales.
Among the cultural relics unearthed from Han tombs in China before 200 BC, there are already steel weights of various sizes. In 1984, in a Han Dynasty single kiln brick tomb in Yaoshang Village, Changxing Town, Meixian County, Shaanxi Province, China, a complete relic of a wooden steelyard scale was found.
scales
The development of ancient steel scales has long been based on the use of rope buttons, non-quantitative weights and wooden, bamboo and bone scales, and is made by hand. It was not until the 20th century that the steelyard was gradually changed from the traditional rope button structure to the outer button and support or the inner button and support structure. After 1949, in order to strengthen the legal management of metrology, China has successively formulated steelyard verification regulations and national standards. From 1985 to 1987, China made a major reform of the steelyard structure, changing the wooden pole to a metal pole, which solved the problem that the measurement accuracy of the wooden pole was affected by the region and the weather, and adapted to semi-mechanization, standardization, Generalization and mass production needs. However, steelyard scales have been gradually eliminated due to their low measurement accuracy.image


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Specifications

Key Features

  • MeasuringToolsType:MeasuringCups

  • Origin:CN(Origin)

  • Material:Glass

  • Feature:Stocked

  • ModelNumber:912068237

  • Type:MeasuringTools

What’s in the box

1*product

Specifications

  • SKU: GE779HA331FO4NAFAMZ
  • Model: CLGJHC111
  • Production Country: China
  • Size (L x W x H cm): 12 x 13 x 15
  • Weight (kg): 0.52
  • Color: 25ml
  • Main Material: Synthetic

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100mL Glass Graduated Cylinder Measuring Single Metric

100mL Glass Graduated Cylinder Measuring Single Metric

GH₵ 214.00
GH₵ 274.0022%
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