varnier Calipers .Micro Meter . strain gauge . techometer . and Different Gauges

1. Experiment # 02
To study different instruments of lab and their Uses.
Instrument:
A tool or implement, especially one for precision work. Measuring device used to gauge the level,
position, speed, etc. of something, especially a motor vehicle or aircraft.
1. Vernier Caliper:
The Vernier caliper is an extremely precise measuring instrument; the reading error is 1/20
mm = 0.05 mm. Close the jaws lightly on the object to be measured. If you are measuring
something with a round cross section, make sure that the axis of the object is perpendicular
to the caliper.
Fig (1)
2. Micrometer:
A gauge which measures small distances or thicknesses between its two faces, one of which
can be moved away from or towards the other by turning a screw with a fine thread.
Fig (2)
3. Gauge:
An instrument that measures and gives a visual display of the amount, level, or contents of
something. The thickness, size, or capacity of something, especially as a standard measure,
in particular.

2. Fig (3)
4. Indicating gauge:
Indicating gauges employ a means to magnify how much a dimension deviates, plus or
minus, from a given standard to which the gauge has been set. They are intended for
measuring errors in geometrical form and size, and for testing surfaces for their true
position with respect to one another. Indicating gauges can be of a dial or lever type.
Fig (4)
.

3. 5. Strain gauge:
The strain gauge module consists of a cantilever beam which is fixed on a rigid body.
Fig (5)
6. Metric MetalRuler:
Are used for measuring a line, and the straight edge allows them to be used for drawing,
scoring, or cutting. They are often used in technical drawing, math & geometry, engineering,
carpentry, and print fields.
Fig (6)
7. Tachometer:
A tachometer (revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the
rotation speed of a shaft or disk, as in a motor or other machine. The device usually displays the
revolutions per minute (RPM) on a calibrated analogue dial, but digital displays are increasingly
common.

4. Fig (7)
8. Voltmeter:
An instrument for measuring electric potential in volts.
Fig (8)

5. 9. Strain gauge trainer:
Introduction to Strain gauges. A Strain gauge (sometimes referred to as a Strain gage) is
a sensor whose resistance varies with applied force. It converts force, Pressure, tension,
weight, etc., into a change in electrical resistance which can then be measured.
Fig (9)
10. Surface level indicator:
Level indicators are devices used in the measurement of level of fluids at various industrial
applications. These devices are used to determine the level of liquid in tanks, drums.
Without proper devices it will be very difficult to find the quantity and level of fluid stored.

6. Fig (10)