Summary of "Como medir con el calibrador vernier | How to use Vernier Caliper"

Summary of “Como medir con el calibrador vernier | How to use Vernier Caliper”

This video provides a detailed explanation on how to use a Vernier caliper to take precise measurements, interpret its scale, and understand the different parts and functions of the tool. The speaker focuses primarily on the traditional mechanical Vernier caliper, explaining its components, measurement types, and how to read measurements both in metric and imperial units.

Main Ideas and Concepts

Types of Vernier Calipers

Plastic calipers: Less precise, good for learning and basic use.
Metal calipers: More precise, used in manufacturing.
Digital and dial calipers: More modern, precise, and easier to read.

Main Parts of a Vernier Caliper

External jaws: For measuring outer dimensions.
Internal jaws: For measuring inner dimensions.
Depth rod/probe: For measuring depth.
Fixed/main scale: Usually in millimeters (bottom) and inches (top), fixed and does not move.
Vernier scale: Sliding scale divided into fractions of millimeters and inches for precise readings.
Locking screw or brake: Holds the measurement in place for easier reading or transfer.

Types of Measurements

External measurements (e.g., outside diameter of a tube).
Internal measurements (e.g., inside diameter of a hollow piece).
Depth measurements (using the depth rod).
Step measurements (using the back of the caliper to measure stepped parts).

How to Read the Vernier Scale

The main scale is divided into 16 parts per inch (each division = 1/16 inch).
Each 1/16 inch is further subdivided into 8 parts on the vernier scale (each = 1/128 inch).
Reading involves:
- Noting the main scale reading just before the zero of the vernier scale.
- Identifying which vernier scale line aligns exactly with a main scale line.
- Adding the vernier scale fraction to the main scale reading for total measurement.

Fraction Simplification

Measurements in fractions should be simplified to their lowest terms (e.g., 14/16 simplifies to 7/8).
The video demonstrates how to simplify fractions by dividing numerator and denominator by common factors.

Examples of Measurement Readings

External diameter of a tube measured as 14/16 inches, simplified to 7/8 inches.
Internal measurement of a die showing 8/16 inches, simplified to 1/2 inch.
More complex examples combining whole inches, sixteenths, and vernier fractions, with step-by-step fraction addition and simplification.

Additional Tips

Use the locking screw or brake to hold measurements.
Always simplify fractions for easier understanding and communication.
Practice with different types of measurements to gain confidence.

Methodology / Step-by-Step Instructions for Using a Vernier Caliper

Identify the Part of the Caliper to Use:
- Use external jaws for outside dimensions.
- Use internal jaws for inside dimensions.
- Use depth rod for depth measurements.
- Use back of caliper for stepped measurements.
Take the Measurement:
- Open or close the jaws until they fit snugly on the object.
- For depth, extend the depth rod until it reaches the bottom of the hole or step.
Read the Main Scale:
- Look at the fixed scale and note the last whole number before the zero of the vernier scale.
- This gives the main scale reading in sixteenths of an inch (or millimeters if metric).
Read the Vernier Scale:
- Find the vernier scale line that exactly aligns with a line on the main scale.
- Note the number of this vernier line (1 to 8).
Calculate the Total Measurement:
- Convert the vernier line number into a fraction of an inch (each vernier division = 1/128 inch).
- Add this fraction to the main scale reading.
- Simplify the resulting fraction to its lowest terms.
Use Locking Mechanism (if available):
- Tighten the screw or brake to hold the jaws in place for easier reading or transferring the measurement.
Practice with Examples:
- Measure objects and verify by simplifying fractions and confirming with known dimensions.

Speakers / Sources Featured

Primary Speaker: Unnamed instructor presenting the tutorial in Spanish, explaining the use and reading of the Vernier caliper in a clear, step-by-step manner.

This summary captures the instructional content of the video, focusing on the practical use of the Vernier caliper, understanding its parts, types of measurements possible, and detailed guidance on reading the scales and simplifying fractional measurements.