# Shared Flashcard Set

## Details

Theory - Angular Measuring Tools
Information on the parts and practices associated with Angular Measuring Tools found in a machine shop
16
Education
Not Applicable
10/13/2012

Term
 What is the unit symbol for Degrees? Minutes? Seconds?
Definition
 Degrees = °Minutes = 'Seconds = "
Term
 How do you read a plate protractor?
Definition
 Read the scale by noting where the index line on the rule crosses the protractor scale. Be careful to choose the appropriate scale.
Term
 What is the discrimination of a universal bevel protractor? What scale does it use to reach this degree of accuracy?
Definition
 The universal bevel protractor can read to 5 minutes of a degree. It uses a vernier scale to achieve this accuracy.
Term
 How is a universal bevel protractors vernier scale read?
Definition
 In the same direction you read the main scale (clockwise/counter-clockwise)
Term
 How are continuous dial indicators read?
Definition
 In one direction. They are ready when the plunger moves in and out from the dial.
Term
 How are balanced (aka dial test) indicators read?
Definition
 In two directions. They read when the arm rotates up or down from the pivot point.
Term
 What are the 3 grades of gauge blocks?
Definition
Term
 What is the typical thickness of wear blocks?
Definition
 0.1000 or 0.0500" thick
Term
 What are the steps for setting up gauge blocks?
Definition
 Step 1: Use two wear blocks of either 0.1000 each or 0.0500 each.Step 2: Use the first series to eliminate the last digit.Step 3: Use the second series to eliminate the second and third digit if possible, or at the very least make the second digit a 5.Step 4: Use the third series to remove the first and second digit if it is still a 5.Step 5: Use the last series to remove the last digit.Step 6: Add the gauge blocks together and double check your math.
Term
 How do you put gauge blocks together?
Definition
 By wringing them tightly against eachother
Term
 What are precision squares used for?
Definition
 Layout and inspection.
Term
 What is the most accurate square?
Definition
 A master precision square. Either a standard cylindrical square or a direct reading cylindrical square.
Term
 The acute angle attachment on the universal bevel protractor is:a) used for angles less than 90 degreesb) used for angles between 90 degrees and 180 degreesc) where the vernier is readd) able to give accurate readings
Definition
 a) The acute angle attachment on the universal bevel protractor is used for angles less than 90 degrees
Term
 The discrimination of the universal bevel protractor is:a) 5 degreesb) 1 degreec) 5 inchesd) 5 minutes
Definition
 d) The discrimination of the universal bevel protractor is 5 minutes.
Term
 The discrimination of a bevel protractor is:a) 5 degreesb) 1 degreec) 5 inchesd) 5 minutes
Definition
 b) The discrimination of a bevel protractor is 1 degree.
Term
 Sine bar cylindrical rollers are:a) usually not hardenedb) only used when accuracy is requiredc) 6" or 12" between centresd) 5" or 10" between centres
Definition
 d) Sine bar cylindrical rollers are 5" or 10" between centres.
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