Does anyone know if any of the testing devices will detect rough uncut diamonds? Going diamond prospecting. If the handheld devices are not ideal, please suggest the best way to detect diamonds in it’s rough form.

I come from a jewelers family, so I can say with assurance that yes, a handheld diamond tester can definitely be used on rough stones.

Good hunting!

battery tester like a turkey baster,12 volt rv deep cell battery

Charge the battery for 6 to 10 hours.

Check each cell, if one cell is bad it will have a noticeably different specific gravity from all the others.

Or just check it with a volt meter after charging it and letting it rest for 5 minutes if the voltage is below 12.6 ( usually it will be down around 11 to 11.5 ) if it has a shorted cell. A fully charged and properly functioning battery will read around 13 volts five minutes after a 10 hour charge.

I have a Kodak Easyshare digital camera, 9.2 mega pixels. I have only had it for about a week and have been using normal alkaline AA batteries. They burn out super quickly!

About rechargable batteries, can you tell me more about them? Like how much they are, how much money the chargers are, etc.? thanks!

Try using AA lithium batteries.

Challenge 3 in 1 Metal, Voltage, Stud Detector / Tester- I have inherited one of these and need to check our walls before putting up shelves. I've fitted a new battery and tried it on the 3 positions but I'm not sure if i need to be pressing the button in because it keeps buzzing all the time when i do.
Can I use the wall for drilling if there are wall studs in it?
Help please there are no instructions!

what happens if you run it over a metal stud with a cable passin through it????THESE TOOLS ARE CRAP AND SHOULD BE CONSIGNED TO BURN IN HELL WITH THE DEVIL!!!!