This document is a presentation on profile projectors. It discusses that a profile projector is an optical instrument used for measuring by magnifying a specimen's profile and projecting it onto a screen. There are three main types - bench, vertical, and horizontal. The document outlines the history, working principle, procedures for use, types, applications, advantages such as time and cost savings, and limitations such as it being a fixed device.

1. Presentation
• Topic Profile Projector
• Submitted To Mr.Arbab Shahid
• Submitted By Umar Farooq
• Reg.No 2016-BT-Mech-726
• Session 2016-2020
MNS UET MULTAN

3. Profile Projector
 A profile projector is an optical instrument that can be
used for measuring.
 The projector magnifies the profile of the specimen, and
displays this on the built-in projection screen.

4. History of Profile Projector
• The idea of using profile projector, which is created
by James Hartness and Russell W. Porter, came from
mixing optics and measurement in a device.

5. Principle of working:
 The main principle of operation is a specimen is
placed on the glass stage. The stage is then
illuminated from below and the resulting image is
picked up by the microscope objectives and projected
to a large built -in projection screen. Since the
specimen has under lighting, the fine microscopic
details are eliminated and only the details of the
contour and profile are seen. A drawing can be
affixed to the profile projector's large viewing screen
and the contour can be easily traced or compared to
other profiles and contours on other drawings.

6. Profile Projector

7. Procedures
1. Switch on the optical profile projector.
2. Place the clean work piece on the glass of the table.
3. Focus it properly by moving focusing wheel and moving the
work table to obtain correct magnified image of the object.
4. Horizontal (x axis) measurement can be taken by right hand
side micrometer and the vertical measurement can be taken
from front side micrometer.

8. Types:
 There are three type of profile projector available in the
market which are
i. Bench type
ii. Vertical type
iii. Horizontal type
 You can get profile projector at Sinowon Innovation
Metrology Manufacture Limited.

9. Usage
 Profile projector is widely used for complex shape stamping gears,
cams, threads and comparing the measured contour model. It’s easy
to use and highly efficient.
 It is a commonly used measurement of stampings,components.
Different industries use different type of components.
 The projector helps in measuring the dimensions with great
accuracy.
 Components that cannot be measured using conventional
techniques are measured by profile projector.
 Irregular shapes can be precisely measured with this instrument.
 It is also used for inspecting minute flaws in glassware.

10. Advantages
• Cost savings
• Time savings
• They’re able to measure in 2-D space.
• Measuring Length and Width.
• Points in Space Measurement
• Dimensioning Measurement
• Angles

11. Disadvantage
• The limitation of using profile projector as a fixed
device forms a disadvantage of it, while instruments
such micrometer or calipers can be used to reach for
measuring far and joint accessible components and it
is large and bulky and usually require a cart to
transport from place to place, also the device requires
power for operation.