Measuring instruments

Measuring Instruments of Mass and Weight of Objects

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Mass measuring instruments are Balance, Scales, mass flow meter Details explanation of example drawings & functions of various kinds of mass / weight measuring instruments

Measuring instruments are of various types according to their magnitude and function. One that is often used is a mass / weight measuring instrument. Tools like this function to measure the mass of an object and the units used such as grams. Mass is often also called heavy in the use of daily communication.

Some tools can be found easily, namely scales for sellers in the market. There are also weight scales in the health center. Some balance sheets use various designs and forms aimed at knowing the mass level of a particular object.

Measuring Instruments

In general, the mass measuring instrument is the Mass Flow meter. This mass meter itself is a tool for measuring the mass of liquid that moves through a coriolis sensor made of special pipe material.

While a weight measuring instrument is a tool that can measure the weight of an object. For example, you buy rice and there is a 5kg label. That is, one bag contains rice with a mass of 5 kg. In the same way, some other objects are accurately measured.

Some examples of mass measuring instruments are scales, mass flow meters and also balance sheets. Scales have several types such as body scales, hanging scales, sitting scales, ndigital scales, and analog scales.

As for the balance sheet itself, it also has several variants such as the hanging arm balance, spring balance, two-arm balance, equal arm, and ohauss balance. Here’s for the detailed review.

Kinds of Mass / Weight Measuring Instruments

Measuring instruments used to measure the time or weight of an object. Weight measuring instruments are usually called scales while measuring mass is known as a balance sheet. In order to make it easier to find out about this topic, a wide variety of Mass measuring instruments will help as a reference.

  • Mass Flow Meter

Measuring Instruments

A commonly used mass measuring instrument is a mass flow meter. The working principle of this Mass Flow meter is to measure the mass of liquid moving through the coriolis sensor following the coriolis law, where the measurement of the fluid passing through the coriolis sensor is calculated by the mass component.

  • Digital Balance Sheet

Measuring Instruments

Scales are also available digital systems that are able to measure accurately. The system is integrated into several scales such as sitting and hanging versions as well as to measure weight. The advantage of this scale is that it is more accurate and easy to calibrate because it uses a digital system.

Digital technology is applied to scales so that measurement accuracy becomes higher. Types of balance sheets or digital scales are available in various variations and models. There is a sitting version for weighing objects and weight.

  • Hanging Balance Sheet

Measuring Instruments

Hanging balances or scales use hanging methods to measure objects. You hook this balance sheet and then the object is placed at the bottom. Next, the measuring scale or meter above the object will move. The object pulls the scale and then connects it to a valid scale.

  • Spring Balance Sheet

Measuring Instruments

A device for measuring the mass of a small object is called a spring balance that is often available in the lab. In addition, this tool also has a newton scale so that it is able to determine weight based on actual physics concepts.

This tool is often in the lab for research. The scale used is twofold, namely weight and mass. You see a scale containing grams and another that specifies Newton’s units. This tool can measure the actual weight if the object is hung on a hook through which the spring will be pulled down following gravity.

  • Ohaus balance sheet

Measuring Instruments

Another mass measuring instrument is called the ohaus balance sheet. The shape is similar to common scales in the market. One part as an area for containers and loads and then the other as a measurement scale. This balance sheet has such a high degree of accuracy that it is used for certain research that requires the mass of objects with a small scale.

  • Digital Scales

Measuring Instruments

Having a shape that is almost similar to Analog in general, the special feature of this digital scale lies in the display of measurement results that are equipped with a screen with digital numbers. The degree of thoroughness of measuring these scales is also exactly the same as that of ordinary analog scales.

  • Analog Scales

Measuring Instruments

Analog scales are also available in various places that require accurate measurement of mass or weight. The system uses a stand that is a support to hold freely. Next, the bottom is indicated the measurement scale.

  • Sitting Scales

Measuring Instruments

Sitting scales are often found because they are easy to wear, affordable, and there are various variations available. This tool uses a stand that contains a certain scale and then at the top is a container to hold objects. Its function is to measure what this scale can accommodate.

  • Toad Scales

Measuring Instruments

Another example of a mass measuring instrument and its functions is a toad scale. This is a scale used by sellers in traditional markets. The tool has two parts for laying loads and weights.

You can only measure based on already fixed values so that it is less flexible for the direct weighing process.

Also Read: Temperature Measuring Instrument

The shape is similar to a balance sheet and is often used by sellers. There are two parts, namely one arm for the container and the other as a weight child consisting of several sizes. This is a traditional type of scale that is easy to find.

  • Body Scales

Measuring Instruments

The image of the weight measuring instrument shows how these scales work. Its function is based on pressure from above and then scale towards the direction of a certain value. These scales are available at health centers, clicks, hospitals, even in your own home.

  • Hanging Scales

Measuring Instruments

Other scales use the means of hanging objects for the measurement process. The tool uses a meter containing the scale located above the object. When you want to measure something, you place the object at the bottom dependently.

For example, when you buy something and the seller uses a certain tool to measure weight. An example is the purchase of rice, fruit and others.

The weight in question wears units of grams, kilograms, tons, and others. For accuracy, the weight measuring instrument must be able to provide the right value so that the transaction process becomes fair.

  • Equal Arm Balance Sheet

Measuring Instruments

The mass measuring instrument image that is often displayed is an equal-arm balance sheet. To make it easier to understand, you can see the shape of the logo related to legal justice. The equal balance sheet of the arm uses two parts on the right and left.

  • Two-Arm Balance Sheet

Measuring Instruments

The balance of the two arms is similar to the scale of the toad, which is the axis point in the middle but the load and size of the reference are made hanging. To be clear, you often see symbols or logos that symbolize the law. Its form is a balance sheet with two arms.

  • Balance Sheet One Hanging Arm

Measuring Instruments

Another type of balance sheet is 1 hanging arm which uses one part to hold freely and the measurement scale is in the part of the upper arm that extends with the scale. You just need to put a limit up to a certain size of mass and then equilibrium occurs.

Calibration of Mass / Weight Measuring Instruments

Measuring Instruments

Measuring instruments for determining weight have been made by man since ancient times. History shows evidence of non-standard weight units and instruments. The system is different in each place so it is quite confusing. Currently, all systems are put together to make it easier and then applied to standard measuring instruments.

The working principle is that this tool uses certain references that are maintained in value despite changes in time, external, and others.

For example, you measure the weight of rice, then you need a reference that represents a unit of weight. To be more accurate, the tool must get calibration so that the measurement system is always valid and reliable.

From what has been explained, a balance or scale is a type of universal measuring instrument for measuring a mass. Its shape, design, and system can change e.g. arm balance, digital, and analog.

In addition, variations also include functions such as balance sheets for body weights, spring balances, and so on.

The mass measuring instrument must go through calibration, which is checking whether the measurement scale remains valid and reliable. The nature of the measuring instrument is that it does not change when used with different objects and is useful for measuring according to the provisions.

The tools used also use a scale from low accuracy to very high precision. Interestingly, you can have any balance sheet and it is sold in many stores.


You already know some measuring instruments that are often used to find out the value of the weight or mass of an object. In physics, there is another term, namely density, which is the value of mass per unit volume. For specific gravity, the formula is absorbed per volume so it must use the right units.

Specific gravity measuring instruments are not available directly because you have to know the separate weight and volume and then immediately calculate with the formula. The weight measuring instrument was described earlier and choose the one that suits the object and size.

To measure the volume, you use a tool such as a ruler or measuring cup if the object is irregularly shaped. So, specific gravity is not measured on one tool.


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