But what is this?
It’s mighty mysterious.
And this is an… electromagnetic radiation tester? Is that something I need?
(I’m tidying up the Cupboard of Tools and Mysteries.)
But what is this?
It’s mighty mysterious.
And this is an… electromagnetic radiation tester? Is that something I need?
(I’m tidying up the Cupboard of Tools and Mysteries.)
I believe that the first “what is this” item is a glass cutter that a glazier will use to break say a window after a line (probably “drawn” by the tip of the tool).
Could the tester perhaps be used to find live wires in walls?
No, doesn’t seem to be doing that. It’s showing “e-field”, and beeping like crazy in the hallway, and not in my living room. When it beeps it also blinks “HARMFUL” and seems to be measuring what it says is “80 V/m”… volts per meter? Very mysterious. Perhaps I should google a manual.
Tile cutter and breaker?
That’s a glass cutter
OK, I’ve now googled, and V/m is indeed volt per meter, and is how you measure field strengths. And the device seems to be giving consistent readings — and the field originates from the heated floor. When I switch it off, it goes to 5 V/m, and when I switch it on, it goes to 60 V/m. And above 40 V/m is allegedly bad for your health. But I don’t know whether that’s for real or just er… for the alternative health crowd.
Meh, I just think this device is a bit enthusiastic. If I hold it a meter from a lamp, it says 0 V/m. If I place it ten cm from a LED bulb, it goes crazy and says it’s 250 V/m and beeps HARMFUL.