- Civil Lab Mechanical Lab Engineering Lab Equipments
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CAT NO: DIDACTICNLE-Export-380008
Specific Gravity Balance For Testing Lab Workshop.
Specific Gravity Balance -
The Specific Gravity Balance provides a
simple and quick mean to read directly the specific gravity of rubber
and other elastomers, thus reducing labor and eliminating calculations.
The time taken to find out the specific gravity of a sample is only
about half a minute.
The balance consists of an anodized
scale with specific gravity (SG) printed on it standing vertically on a
heavy base plate. A balancing arm is provided at the center point of
the scale. The arm is supported on two jewel bearings to minimize
friction.
Two stainless steel pins are suspended from
one end of the arm. One of the pins is attached through a short length
of yarn and the other through a long length of yarn. The second pin is
kept immersed in water inside a tall transparent jar kept on the base.
This pin also acts as the sinker.
A pointer is attached
at the other end of the balancing arm that indicates the specific
gravity of sample under test. A sliding weight is provided for initial
balancing of the test specimens of different weights. A leveling screw
is provided for initial leveling of the base plate.
The
jar in which the test specimen is dipped for measurement of its specific
gravity is placed on the base of a frame that can be moved up or down
on a rod fixed to the base of the balance.
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