Most likely they were testing a live circuit. Continuity testers are designed to test UNENERGIZED circuits. The bulbs in these testers are only rated for around 3 volts. If you hook this up to a live circuit in your house, you just put 120 volts through the bulb and that is why it blew out.
No, we do not offer leads for these. The way these are manufactured, you would have to disassemble the entire tester and re-solder new leads on. These testers are not designed to be taken apart.
These testers were designed for quick basic testing to determine if there is voltage at an outlet or on a line. They are not designed to pin-point which line is the hot and which is neutral. For that you would want to use the VD6505 because they have an adjustment for the sensitivity to dial it down and give more accurate readings.
No, we do not have replacement lenses or decals for the outlet testers. Any of the testers that have lenses that would fall out have been obsolete for about 2 years.
We do not have any type of covers or protective cases for the meters. Some units will come with a case, but we do not sell them individually.
Yes, for the GB and Sperry meters RTL-107 is a slide on alligator clip that slides on to the metal tip of the test leads. For a customer looking for Sperry leads with alligator clips, TL42 has removable alligator clips. The alligator clips that come with these leads will not work with any other set of leads because instead of just sliding on the test leads, these ones will screw onto the lead.
Any multimeter with the ability to test resistance or ohms can measure for continuity. Some meters have an audible buzzer to let you know when you have continuity, while others don’t. You need to keep an eye on the display to watch the reading the tester is giving. Most analog testers you have to watch the screen to see if the needle goes all the way to the right. With the digital meters, some have an audible symbol to let you know if the meter has an audible buzzer or not.
This is the audible continuity buzzer. In most cases, if the reading is under 50 ohms of resistance, the meter will buzz. With other testers, you would just select any of the resistance ranges (Ω) and watch the reading you get on the screen. It should be as close to 0.00 as possible to have the best continuity. Most times you will get something between 0.00 and 0.3 on the display because the meter is picking up resistance in the circuit being tested and in the test leads.
WARNING!!! ALWAYS TEST CONTINUITY ON A CIRCUIT THAT IS SHUT OFF. A live circuit will damage the tester and potentially injure the user.