Explain what watches are used for?

What is an analog clock?

Dial gauges are commonly used in the mechanical processing industry. This device is usually attached to the head of a high gauge, helping to measure the straightness, reorientation of the inner surface or parallelism of the groove.  

In addition, the dial gauge is also used to check plane, perpendicularity and deviation, especially useful in the fields of construction, industry and mechanical engineering. With high sensitivity and extremely low error, the meter ensures accuracy from 0.01mm to 0.001mm, meeting strict measurement requirements..

What is the structure of a watch?

The structure of the dial gauge is quite simple, similar to many other types of gauges, including the following main parts:  

- Measuring head: This part is in direct contact with the surface to be tested, usually made from abrasion-resistant alloy to ensure durability and accuracy.  

- Measuring axis: The length of the measuring axis varies depending on the type of dial indicator, to accommodate the inspection of details of different sizes.  

- Bushing: This part protects part of the measuring shaft, ensuring smooth and durable operation.

- Transmission mechanism: This is a system that includes transmission linkage details, helping the measuring shaft move and displaying results. With mechanical watches, measurement results are expressed through the movement of the index needle, while electronic watches use a sensor system to process and display measurement data.  

- Outer shell: Protects the internal components, making the device effectively dust and water resistant.  

In addition, the dial gauge is also equipped with other details such as clamping lever, locking screw, cover, depending on the design of each type.

Working principle of dial indicator

The operating principle of the dial indicator is quite simple. When the main axis of the watch moves, it will transmit a signal to the scale, helping the indicator needle on the watch face display the measured value. The mechanism operates based on a combination of pre-set gears, ensuring accuracy during measurement.

How to use the dial indicator

To use the dialer effectively and simply, you can do the following steps:  

1. Prepare a meter, the object to be measured and a suitable space to perform the measurement.  

2. Check the watch's operating status to ensure the device is still working well.  

3. Fix the meter to the object to be measured on the stand, then adjust the display ring on the scale to 0 before starting to measure.  

4. Bring the object to be measured into contact with the meter's measuring head and read the value displayed on the dial. To ensure accuracy, measurements should be performed 1-3 times.

Note: When measuring, make sure the displayed indicators are stable. When dropping or lifting the measuring shaft, be careful to let the shaft fall naturally. Measurement results should not differ by more than 0.5 bars to ensure accuracy.  

How to read numbers on a dial indicator

Reading the numbers on the dialer is simple thanks to the device's intuitive design.

For electronic meters, the numbers are displayed directly on the LCD or LED screen, making it easy for users to observe. However, due to its ability to quickly update data, this type of meter can be difficult when checking small changes on a flat surface.

For mechanical dials, when moving the measuring position, the indicator needle on the watch face also moves accordingly, helping users observe changes more clearly.

Specific reading is as follows:

The small scale displays the integer mm, read based on the position of the index needle.

The large scale displays the percentage of mm, determined by the position of the pointer on the large graduation ring.

For example: With a dial indicator with 0.01mm division, if the needle is at the 2nd mark on the small ruler and the 25th mark on the large ruler, the measurement result is 2.25mm.

Refer to analog clock products at: The dial indicator displays the EMIN number