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Measuring Tools

Measuring instruments includes a vast amount of tools and instruments used for measuring. This would include micrometers (various types for various applications), scaled rules, durometers, spectrometers, tape measures, dumpy levels, spirit levels, combination sets, gauge blocks, vernier calipers, dial indicators, inside and outside calipers, etc.

1,282 Questions

What is two grains in the apothecary system?

In the apothecary system, two grains is a unit of weight commonly used to measure small quantities of medications and substances. One grain is approximately 0.065 grams, so two grains would be about 0.13 grams. The apothecary system, which has largely been replaced by the metric system, uses grains as a traditional measure, particularly in pharmacology. It is still sometimes encountered in prescriptions and compounding practices.

How you can modify the wind vane to detect the speed of wind?

You fit it with 3 cups that revolve with the wind from any direction and record the velocity through a cable to a gauge. This is called an "anemometer"

What is the tool for measuring mass?

well, it depends on how "massive" of the mass, if it is very big, you can use a loadometer or weighbridge, if it is not big enough, a normal balance will do it.

What would you use to measure the amount of juice in a cup?

You could pour the liquid into a measuring beaker or graduated jug.

You could pour the liquid into a measuring beaker or graduated jug.

What is flexible steel rule and uses?

A flexible steel rule is similar to a rigid steel rule but it is easier to bend and it does not retain shape when bent, but springs back to it's original straight shape. You use it to measure length or distance. You can also use it to whack (hit) things, but don't do your little brother or he'll tell Mom.

What would you use to measure how crowded a country or region is?

You could use how many people are in the country, and how big the country is, then divide to find the population density.

e.g.

china has 1,339,190,000 people

while being 9,596,960.00 square km.

So there are 139.54 people per sq. km.

Hope this helps

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How are radio waves used to find the speed of a moving object?

By using an phenomenon called the Doppler Effect, which causes waves (e.g. radio, light, sound) that are reflected off a moving object (or emitted by a source on a moving object) to shift frequency proportionally to the speed of the object.

  1. if the object is moving towards the observer the waves shift to a higher frequency
  2. if the object is moving away from the observer the waves shift to a lower frequency
The speed detector (e.g. RADAR gun) uses a method called heterodyning to "beat" the original transmitted radio waves with the received radio waves that reflected back from the object to generate a "difference frequency" that will be proportional to the relative speed of the object to the observer. This "difference frequency" is then fed to a frequency counter circuit and the result is scaled to be displayed in the correct units of speed that the user needs.

For objects that emit the waves themselves (e.g. stars, galaxies) it is necessary to find spectral lines of known elements or compounds and measure how much the frequency of these spectral lines have shifted from their known standard frequency. If sound waves emitted by a vehicle (e.g. train whistle) you must somehow know the frequency of the sound source on the vehicle when it isn't moving (this may or may not be possible).

What is a process you would use to create the perpendicular bisector to a segment AB using only an unmarked straightedge and an unmarked compass?

  1. Open the compass to a width greater than half the length of AB.
  2. Place the compass point at A.
  3. Draw arcs above and below the line AB.
  4. Move the compass point to B WITHOUT changing the compass setting.
  5. Draw arcs above and below AB to intersect them at X and Y.
  6. Join XY.

XY is the perpendicular bisector of AB.
7. Celebrate the successful completion of the task!

How should the final answer be expressed so that it can be measured by all measuring tools used?

The final answer should be expressed using appropriate units of measurement that are universally understood, such as meters, grams, liters, etc. It should be presented with the level of precision indicated by the measuring tools used, and any uncertainties or margins of error should be clearly stated. This ensures that the measurement is accurate, consistent, and comparable across different measuring tools.

Who invented the trundle wheel?

Hugh Boyland invented the trundle wheel. The trundle wheel is used to measure long distances and was invented in the 1970's.

What is the difference between a linear meter and a metric meter?

A linear meter is a meter, in a straight line, as opposed to cubic meter, which covers a 2-dimensional plane. They are both part of the metric system. There is no metric meter, other than just referring to a meter as being part of the metric system.

What reading will be displayed on a DVOM if the scale is exceeded?

It depends on the device and manufacturer, but most digital multimeters will display "OL", which indicates an OverLoaded input for the specified range. The term "overload" doesn't necessarily mean that a voltage or current is necessarily at a dangerous level or a level that might damage the device, but rather that the upper limit of its measuring capability has been reached.

In order to protect the equipment from damage, it's a good idea to set the meter to its highest range first when working with unknown voltages or currents and make a quick measurement at that level to make sure you don't get an overload (OL) on the display. This tells you whether or not you are potentially working beyond the manufacturer specified limits of the equipment (though the manufacturer limits are usually higher than the measurement limits).

What is a caliper on a car?

Brake calipers are what squeeze the brake pads against the brake rotor.

What is steel tape?

Metallic tape is any tape with an aluminum, steel or decorative foil on the outer surface. Steel tape s the general term for a steel tape measure or ruler or a metallic tape with a street foil surface.