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Height & Weight Scale ZT-160 – NSL



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Height & Weight Scale ZT-160 – NSL



Type ZT-160 body-weight balance is widely applicable to measure the weight and height of people in enterprise, school, hospital, clinic and sports department, featuring advanced in design, fine in material and high in accuracy. The reading of weight is manually indicated on the primary and secondary Scale plates respectively by means of two sliding weights so that it is very easy to be operated.

Technical parameters:

  • Max.weighting:160kgs
  • Scale division (d):100g
  • Height range to be measured: 70-190cm
  • Min. value of height per division: 0.5cm
  • Size of packing box: 815/895×465×265mm
  • Load platform area (L×W):375×270mm
  • Measurement (L×W×H):570×437×1317mm
  • Weight: 26.5kg


A Height & Weight Scale measures mass by reporting the distance that a spring deflects under a load. This contrasts to a balance, which compares the torque on the arm due to a sample weight to the torque on the arm due to a standard reference mass using a horizontal lever. Spring scales measure force, which is the tension force of constraint acting on an object, opposing the local force of gravity.[6] They are usually calibrated so that measured force translates to mass at earth’s gravity. The object to be weighed can be simply hung from the spring or set on a pivot and bearing platform.

In a spring scale, the spring either stretches (as in a hanging scale in the produce department of a grocery store) or compresses (as in a simple bathroom scale). By Hooke’s law, every spring has a proportionality constant that relates how hard it is pulled to how far it stretches. Weighing scales use a spring with a known spring constant (see Hooke’s law) and measure the displacement of the spring by any variety of mechanisms to produce an estimate of the gravitational force applied by the object.[7] Rack and pinion mechanisms are often used to convert the linear spring motion to a dial reading.

Spring scales have two sources of error that balances do not: the measured mass varies with the strength of the local gravitational force (by as much as 0.5% at different locations on Earth), and the elasticity of the measurement spring can vary slightly with temperature. With proper manufacturing and setup, however, spring scales can be rated as legal for commerce. To remove the temperature error, a commerce-legal spring scale must either have temperature-compensated springs or be used at a fairly constant temperature. To eliminate the effect of gravity variations, a commerce-legal spring scale must be calibrated where it is used.


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