7.3.12 Vernier Caliper Flashcards
What are calipers used for?
Calipers are used to determine dimensions and can take measurements of an object that can be read directly from the instrument.
What are the three common types of calipers?
The three common types of calipers are Vernier Slide Caliper, Digital Caliper, and Dial Caliper.
What is a Vernier slide caliper?
A Vernier slide caliper is used to make accurate internal, external, and depth measurements faster than a micrometer.
What are the main parts of a Vernier slide caliper?
The Vernier slide caliper consists of a fixed jaw with a measurement scale and a moveable jaw with a Vernier scale.
What is the purpose of the fine adjuster on a Vernier caliper?
The fine adjuster allows for precise adjustments to achieve the final measurement.
How does the Vernier scale work?
The Vernier scale compares a main scale divided into a certain number of divisions with a second line of equal length divided into fewer divisions.
What is the accuracy of a 1/10 Vernier scale?
The accuracy of a 1/10 Vernier scale is 0.1 mm.
What is the accuracy of a 1/20 Vernier scale?
The accuracy of a 1/20 Vernier scale is 0.05 mm.
What is the accuracy of a 1/50 Vernier scale?
The accuracy of a 1/50 Vernier scale is 0.02 mm.
How are readings taken with a Vernier caliper?
Readings are taken by counting the total length on the main scale and adding the value from the Vernier scale.
What should be done before using a Vernier caliper?
A zero error check must be done to ensure the caliper is calibrated.
What is a digital caliper?
A digital caliper uses electronics to measure and display dimensions.
What are the advantages of a digital caliper?
Advantages include easy reading, no parallax error, quick unit changes, and simple zero checks.
What are the disadvantages of a digital caliper?
Disadvantages include high cost, susceptibility to environmental damage, and usually requiring replacement if they fail.
How does a dial caliper work?
A dial caliper uses a dial to indicate measurements, which are added to the main scale reading.
What are the disadvantages of a dial caliper?
Disadvantages include being easily damaged and more difficult to read than other types.
