http://www.amazon.com/gp/product/B003LCL4D6?camp=1789&creative=9325&creativeASIN=B003LCL4D6&linkCode=as2&redirect=true&ref_=as_li_tl&tag=toolsreviews-20



This can be realy good for you.

Also this is cheaper:



http://www.amazon.com/gp/product/B000EX0AE4?camp=1789&creative=9325&creativeASIN=B000EX0AE4&linkCode=as2&redirect=true&ref_=as_li_tl&tag=toolsreviews-20



Enjoy

Price: $23.30 TENMA 72-7765 Pocket Size Digital Multimeter, 4000 Count, Autoranging with Transistor Test http://www.newark.com/tenma/72-7765/multimeter-digital-handheld-3/dp/02J5546?MER=ALT_N_L5_TestEquipment_None



or this one CRAFTSMAN $54.99 its in stock for shipping



http://www.sears.com/craftsman-digital-multimeter-with-auto-ranging-11-function/p-03482334000P?prdNo=2&blockNo=2&blockType=G2

http://www.ebay.es/itm/PortaPow-USB-Potencia-Monitor-Multimetro-Amperimetro-Voltimetro-Metros-Solar-/221663072288



Economico, compact and two uses. And 10 dolars.

good