For testing if a conductor is disconnect from electric current it is import two use a testing device that uses the line voltage (Voltage to check) itself to show if there is Voltage. So a digital multimeter is not suitable for this. Also most analogue meters made since the 60s are not suited as the partly use battery operated amplifier circuits for the analogue meter. Thatfor small two probe voltage indicators were made out an power resistor and an neon glow lamp. The better one even had an polarity indicator. The lamp shown here is one of these.
|Lamp Type:||low pressure Neon discharge lamp negative typ.|
|Filament/Radiator Type:||Steel electrodes|
|Fixture Type:||two pole voltage identifiers|
|Location:||In my collection of courseion|
|Voltage:||110-750V ~/⎓ line voltage|
|Assembly Line:||Philips Netherlands|
|Fabrication Date:||c. 1940|
|Application/Use:||two pole voltage indicator|
|Download:||Download this File|
|File Size:||403 KB|
|Date added:||Dec 20, 2019|
|Dimensions:||2464 x 1848 pixels|
|Date Time:||2019:03:08 11:26:21|
|DateTime Original:||2019:03:08 11:26:21|
|Exposure Bias:||0 EV|
|Exposure Time:||1/40 sec|
|Focal length:||4.5 mm|
|Model:||Canon IXUS 170|
|Favorites:||Add to Favorites|
Pretty, please no more Chinese failure.
Interested in the history of electric lighting and incandescent in particular and neon glow lamps.