Metrology paper 1
IE 305
Laboratory M_1
Introduction to the Metrology Laboratory
Section 008
November 14, 2012
Introduction
The first Metrology lab’s main purpose was to help each team familiarize themselves with the Metrology lab workstation and the apparatus involved. Teams were introduced to new instruments, like the Micrometer, Depth Micrometer, Vernier Caliper, Vernier Height Gage and Gage Blocks. The teams were then briefed about each instrument and how each tool has is used depending on the type of measurement required. Also, the teams were taught how to use the tools in an orderly manner to ensure the safety of the tools. When the teams were instructed about the different tools, they discovered the variability inherent in manufactured components.
The first micrometer was invented in the 17th century by William Gascoigne. Although, this micrometer was used for a completely different purpose from the conventional one: To measure angular distances between stars and gage relative sizes of celestial objects. The first handheld micrometer, that is still widely used, was invented by Jean Laurent Palmer of France in 1848. This tool works on a simple principle of a very accurate screw turning in a nut initiating a spindle to move closer to or away from the opposite face. The distance between the opposite face and the spindle is read on the scales on the handle. There are digital micrometers that flaunt the reading on a display on the handle. Different micrometers have different ranges, usually displayed on the frame. A variation to the Micrometer is the Depth Micrometer. It works on the same principle as the micrometer but designed to specifically measure distance of feature relative to a flat reference surface.
Another widely used tool, the Vernier Caliper, was invented by French scientist Pierre Vernier. This is an inexpensive tool that provides accurate measurements over ranges better than micrometers. Although unlike micrometers,
Laboratory M_1
Introduction to the Metrology Laboratory
Section 008
November 14, 2012
Introduction
The first Metrology lab’s main purpose was to help each team familiarize themselves with the Metrology lab workstation and the apparatus involved. Teams were introduced to new instruments, like the Micrometer, Depth Micrometer, Vernier Caliper, Vernier Height Gage and Gage Blocks. The teams were then briefed about each instrument and how each tool has is used depending on the type of measurement required. Also, the teams were taught how to use the tools in an orderly manner to ensure the safety of the tools. When the teams were instructed about the different tools, they discovered the variability inherent in manufactured components.
The first micrometer was invented in the 17th century by William Gascoigne. Although, this micrometer was used for a completely different purpose from the conventional one: To measure angular distances between stars and gage relative sizes of celestial objects. The first handheld micrometer, that is still widely used, was invented by Jean Laurent Palmer of France in 1848. This tool works on a simple principle of a very accurate screw turning in a nut initiating a spindle to move closer to or away from the opposite face. The distance between the opposite face and the spindle is read on the scales on the handle. There are digital micrometers that flaunt the reading on a display on the handle. Different micrometers have different ranges, usually displayed on the frame. A variation to the Micrometer is the Depth Micrometer. It works on the same principle as the micrometer but designed to specifically measure distance of feature relative to a flat reference surface.
Another widely used tool, the Vernier Caliper, was invented by French scientist Pierre Vernier. This is an inexpensive tool that provides accurate measurements over ranges better than micrometers. Although unlike micrometers,