What the Libra zodiac sign is all about: Libra is the seventh of the 12 zodiac signs, which begins its cycle in early fall every year during Libra seasonâwhich falls around September 23-October 22.
How it works. This schematic shows the component parts of a typical leak-down tester. The gauge on the right is held at a standard pressure by adjusting the pressure regulator while the gauge on the left shows an example reading of 85-or 15% leakage.
A tester and analyzer for twisted pair and fiber optic cables. A simple tester for BNC and twisted pair cabling. A cable tester is an electronic device used to verify the electrical connections in a cable or other wired assembly.Generally a cable tester consists of: 1  A source of electric current, 2  A volt meter, 3  A switching matrix used to connect the current source and the voltmeter to all of the contact points in a cable. tester and analyzer for twisted pair and fiber optic cables. A simple tester for BNC and twisted pair cabling. A cable tester is an electronic device used to verify the electrical connections in a cable or other wired assembly.