Either one or all of them, they're necessary for technicians order to cut the metal and sheet metal to their liking..
technician needs to always have at hand gun to secure various materials, such as the duct wrap. 2.
In case you do not have available camera, or it's not the right fit for diagnosing the system your servicing, thermometer might just be enough to get the job done..
You can also try to do it the old fashioned way and look for leaks with your own eyes, and the detector can make everything easier for you..
This is useful as specific amount or threshold needs to be met order to maintain the in the designated space..
Depending on the type of job or the location you need to work in, some sort of artificial light can be necessary..
bar can make the difference between being stuck at the job or having another happy customer..
These are on par with the hammer and the tape measure, as they are must for every tool belt..
as technician you should have available multimeter and tester to help you measure voltage, resistance and other electrical tests..
Same as with the safety goggles, good pair of shoes can make the difference between getting home with feet aches or happily-whistling your way back home..
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