I wish i’d known this sooner, How to use calipers like a pro

Summary

This video script delves into the intricacies of using vernier calipers, a tool often misunderstood for its precision. It highlights the vernier scale's accuracy, comparable to digital calipers, and demonstrates how to read it for high-fidelity measurements. The script also covers the proper use of digital calipers, including outer, inner, depth, and step measurements, ensuring accuracy. Additionally, it explains the difference between European conformity and China export emblems on calipers and provides insights into metric and British standard thread charts.

Takeaways

• 🔍 Verer calipers are often misunderstood but are nearly as accurate as digital calipers, with accuracy ranging from 0.02 to 0.05 mm.
• 📏 The Verer scale on calipers works by aligning the best-matching line to the main scale to determine decimal points in millimeters.
• 👁️‍🗨️ The precision of Verer calipers is so high that it exceeds the resolving power of the human eye, which can only perceive up to 1 mm.
• 🔋 Despite their accuracy, Verer calipers have the advantage of not requiring batteries and having a thinner profile compared to digital calipers.
• 📐 Digital calipers offer ease of use with a screen display and four main methods of measurement: outer, inner, depth, and step.
• 📏 For accurate measurements with digital calipers, it's crucial to keep the jaws close to the device and ensure they are square to the object being measured.
• 🔩 The back of most calipers includes charts for metric ISO and British standard threads, providing dimensions for screws and bolts.
• 🔍 The 'C' mark on calipers indicates conformity to European regulations, which is a sign of quality, but it's important to distinguish it from the 'China export' mark.
• 🧐 The European Conformity mark has more space between the letters compared to the China export mark, which is closer together.
• 🛒 Links to purchase items featured in the video are provided to support the channel and assist viewers in obtaining the tools discussed.

Q & A

What are Verer calipers and why are they often misunderstood?

Verer calipers are a type of measuring tool with a scale on the sliding part, named after Pierre Verer. They are often misunderstood due to their unique scale and the misconception that they are less accurate than digital calipers.

How accurate are Verer calipers compared to digital calipers?

Verer calipers can be nearly as accurate as digital calipers, with accuracy ranging from 0.02 to 0.05 mm, which is very precise and often imperceivable to the human eye.

How does the Verer scale work on calipers?

The Verer scale works by aligning the best-matching line on the sliding scale with the line on the centimeter or inch scale, which indicates the decimal points in millimeters for precise measurements.

What is the significance of the 'C' mark on calipers?

The 'C' mark signifies that the tool conforms to all European regulations, specifically the European Instruments Directive, which is an indicator of quality.

How can you distinguish between the European Conformity emblem and the China Export emblem on calipers?

The European Conformity emblem has more space between the letters, while the China Export emblem has letters closer together. The 'C' in the European emblem should barely intersect with the letter 'e', whereas in the China Export emblem, it appears to surpass it.

What are the four main methods of measuring with calipers?

The four main methods of measuring with calipers are outer measurement, inner measurement, depth measurement, and step measurement.

Why is it important to keep the calipers close to the measurement point when using them?

Keeping the calipers close to the measurement point is important to avoid any minor play that can create an angle in the jaw, which can throw off the accuracy of the measurement.

How should you ensure the calipers are square to the object you're measuring?

To ensure the calipers are square to the object, apply some tension and slightly rock the tool back and forth. If you're slightly off, you'll feel the calipers settle into place.

What is the purpose of the depth measurement tool on calipers?

The depth measurement tool, which is the rod that extends from the end of the calipers, is used to measure the depth of an object or hole by extending the rod into the crevice.

How do you use the step measurement feature of calipers?

For step measurements, you push the calipers open slightly, set the step on the object to be measured, and then, holding the shaft, push down to the desired measurement while ensuring the calipers are flush and straight with the surface.

What information does the metric ISO thread chart on calipers provide?

The metric ISO thread chart provides important dimensions for threads and screws, including the major diameter, thread pitch, minor diameter, and the drill size bit that should be used to drill a hole for the screw.