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Summary

In this video, the presenter guides viewers on how to read measurements from a caliper, explaining the main scale and vernier scale. By focusing on the main scale and the line that best aligns with the zero point on the vernier scale, users can determine precise measurements. Examples are given to illustrate how to read the caliper's scale accurately, from measurements like 21.7 mm to 30.0 mm, demonstrating the process of identifying the closest lines and reading them correctly. The video offers clear step-by-step instructions to ensure viewers can master using the caliper.

Takeaways

• 😀 To read the results from a caliper, focus on the main scale and the Vernier scale.
• 😀 The main scale is the one located on the body of the caliper, while the Vernier scale is on the sliding jaw.
• 😀 Each division on the main scale represents 1 mm, while each division on the Vernier scale represents 0.05 mm.
• 😀 Start by identifying the main scale line that is closest to zero on the Vernier scale.
• 😀 For example, if the 21st line on the Vernier scale aligns with the main scale, it indicates 21 mm.
• 😀 Then, find the line on the Vernier scale that aligns exactly with the main scale for a more precise reading.
• 😀 In the example, the 7th line on the Vernier scale indicates an additional 0.7 mm, making the total measurement 21.7 mm.
• 😀 Another example shows that the 18th line on the Vernier scale aligns with the main scale, giving a reading of 18 mm.
• 😀 The Vernier scale’s 2nd and 3rd lines together indicate 0.25 mm, adding to the main scale reading of 18 mm, resulting in 18.25 mm.
• 😀 In cases where the Vernier scale is exactly aligned with the main scale (e.g., line 30), there’s no additional value, so the result is 30.000 mm.
• 😀 By carefully observing the main and Vernier scales, you can accurately read the measurement of the caliper.

Q & A

What are the two scales used to read measurements on a caliper?

The two scales used are the main scale (skala utama) and the vernier scale (skala nonius). The main scale is located on the body of the caliper, while the vernier scale is found on the sliding jaw.

What is the value of each strip or line on the main scale?

Each strip or line on the main scale represents a value of 1 millimeter.

How much does one line or strip on the vernier scale represent?

One strip or line on the vernier scale represents a value of 0.05 millimeters.

How do you determine the value on the main scale when reading the caliper measurement?

To determine the value on the main scale, look for the line that is closest to zero on the vernier scale. This line gives the main scale reading in millimeters.

What does it mean when the line on the vernier scale aligns exactly with the main scale?

When a line on the vernier scale aligns exactly with the main scale, it indicates the exact measurement at that point, contributing to the final reading.

In the first example from the script, what is the measurement reading from the caliper?

The measurement reading from the caliper in the first example is 21.7 millimeters.

How do you read the vernier scale in the second example?

In the second example, after identifying the main scale reading (18 mm), the corresponding line on the vernier scale that aligns with the main scale is between lines 2 and 3, giving a vernier scale value of 0.25 mm. The final measurement is 18.25 millimeters.

What happens if no additional value is shown on the vernier scale, as seen in the third example?

In the third example, if the vernier scale shows no additional value (lines 0 and 10 are aligned with the main scale), the measurement remains at the main scale value, which is 30 millimeters. The final measurement is 30.000 millimeters.

What is the importance of the main scale and vernier scale in reading a caliper?

The main scale provides the initial measurement in millimeters, while the vernier scale fine-tunes the reading to give more precise measurements, typically to the nearest 0.05 mm.

What is the significance of understanding how to read both scales accurately when using a caliper?

Accurately reading both the main scale and the vernier scale is essential for precise measurements, which is crucial in fields like engineering and manufacturing where exact dimensions are needed.