Precision Measuring Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Precision Measuring

Precision Measuring Precision measuring tools are needed for accuracy Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Precision Measuring Precision – How close together or repeatable the results are A precise measuring instrument will give nearly the same result each time that it is used. Accuracy – How close a measurement is to the accepted value For example, a balance loaded with a standard 100 g weight should read 100 g. If it doesn’t, then the balance is inaccurate. Precision measuring tools are needed for accuracy

Tools for Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Steel Rule Micrometer

Tools for Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Digital Caliper One of the most common tools for reverse engineering is the dial caliper because of its versatility. Dial Caliper

{ Reading a Dial Caliper The dial caliper is a precision measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring The dial caliper is a precision measuring instrument. The caliper’s blade graduations are in inches and tenths (.1) of an inch. inch { Each inch is broken into ten, for .1 of an inch.

Reading a Dial Caliper The caliper’s dial graduations are Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring The caliper’s dial graduations are in thousandths (.001) of an inch. The reference edge keeps track of larger increments; the dial is for smaller increments.

One full revolution of the pointer on the dial equals Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring One full revolution of the pointer on the dial equals one hundred thousandths (.100).

Dial Caliper Parts Inside Measuring Faces Dial Clamp Screw Blade Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Dial Caliper Parts Inside Measuring Faces Dial Clamp Screw Blade Fine Adjustment Screw Dial Adjustment Screw Outside Measuring Faces

2 Reading a Dial Caliper Step 1 Read inches from the blade Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Step 1 Read inches from the blade 2 1 in. – 6 in.

2 3 Reading a Dial Caliper Step 2 Read tenths of an inch from Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Step 2 Read tenths of an inch from the blade 2 3 1 in. – 6 in. .0 in. -.9 in.

2 3 2 8 Reading a Dial Caliper Step 3 Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Step 3 Read thousandths of an inch from the dial 2 3 2 8 1 in. – 6 in. .0 in.- .9 in. .001 in.- .099 in.

Dial Calipers Measure Thickness or Outside Diameter Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Dial Calipers Measure Thickness or Outside Diameter

Dial Calipers Measure Thickness or Outside Diameter Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Dial Calipers Measure Thickness or Outside Diameter Inside Diameter or Space Width

Dial Calipers Measure Thickness or Outside Diameter Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Dial Calipers Measure Thickness or Outside Diameter Inside Diameter or Space Width Depth

Dial Calipers Measure Thickness or Outside Diameter Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Dial Calipers Measure Thickness or Outside Diameter Inside Diameter or Space Width Depth Step Distance

Discussion Questions List measurement tools… Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Discussion Questions List measurement tools… Steel Rule Tape Measure Dial Caliper Meter Stick Explain which one of the tools listed would be best to use and why when measuring: The hallway Engineering Notebook Pencil diameter Height of your desk

Precision Measuring Gateway To Technology® Unit 1 – Lesson 1.3 – Measuring Image Resources Microsoft, Inc. (2008). Clip Art. Retrieved October 10, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx Wikimedia commons (2008). Retrieved October 15, 2008, from http://commons.wikimedia.org/wiki/ImageCaliper