Product DescriptionThe voltmeter need independent power supply, power supply range is DC 4.5-30V, powered access between the red and black lines,
Firstly the voltmeter shows 0.0, then you can put the yellow and black line in between to measure voltage.Features:
Wide measurement range 0-200V.
Mini Red LED disp..
This professional grade
Digital Caliper is a hi-tech precision instrument which is made out of
surgical grade stainless steel. It can be used to measure internal and
external distances with extreme accurately. Using the Digital Calipers
is easy - measurements are clearly displayed and can be switched between
metric or imper..
This hi-tech microscope allows you to see into a "bigger" world.
Excellent for zooming in and capturing images of various objects, this
is an invaluable tool to keep on hand for professional applications.
What makes it unique is that not only does it snap HD pictures, but it
allows to capture the video, and also to measure the objects. This USB..