There are various kinds of weighing scales in the market.
The oldest are the analog scales. Today weighing scales have evolved into
digital scales, high tech scales, high capacity scales and design minded
scales.
The first type is the
weighing scale analog. It is the
perfect answer for a wide range of manual applications. They are popular
because of their accuracy and low price.
The earliest analog scales were called as balances. These
were made of four parts: lever, fulcrum and two pans. The central beam
consisted of the fulcrum to which is attached middle of the lever, allowing it
to pivot. At each end of the lever are placed, the two pans. When you want to
measure weight of an object, it would be kept on one pan and known weights
would be placed on the other pan. When lever reached horizontal position, it meant
that items in both pans were of equal weight.
Analog scales developed into triple beam balances, double
beam balances and hand scales. Another popular development is the analog spring
scale. Variants of this type are bathroom floor scales, hanging scales and top
loaders. These scales work on the principle that when you impose force on a constant,
known spring, it will stretch to a notable, known distance.
To measure using the analog spring machine, one can attach a
weight to the spring. When this weight is applied, an indicator will move up
and down, along a pre-marked weight measurement. On using the spring concept in
the weighing scales, anything from one to four springs can be used. Springs are
placed in the corners and on application of force, the springs are stretched
and they cause a pre-marked measurement wheel to spin.
Digital scales are an improvement over the analog scales and
are simple and accurate. They are operated by batteries and are easily
available in stores and online. Some have the capacity to store previous ten
readings.
High tech scales are able to delve deeper into the
composition of the body than analog or digital scales.
Several models calculate
percentage of body fat by using a tiny electric pulse to distinguish between
muscle tissue and fat. Some scales sync readings with one’s smart phones or
tablets, updating readings of BMI index and digital weight. Then there are talking
weighing scales which suit the visually impaired.
High capacity scales are suited to those with excessive
weights of more than standard amounts. Designer scales match the aesthetics of
your room like bathrooms. These include teak wood, mirrored and bamboo digital
scales.
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