Does it has a place to keep the needles???

Yes, there's a back cover you can open where the needles can be held

Does it pump up the volleyball if the pressure is too low?

It does not. I had an all in one digital pump/gauge from Molten that failed after 4 years. I couldn't justify the new price. http://www.ebay.com/itm/like/322116878960?lpid=82&chn=ps&ul_noapp=true. This one works quite well. Turn on first, put in ball and read pressure. It turns off automatically and quite quickly.

Part number	AG500
Item Weight	122 g
Product Dimensions	15.49 x 6.6 x 5.59 cm; 122.47 g
Is Discontinued By Manufacturer	No
Material	Plastic
Batteries Included	Yes
Batteries Required?	No
Item Dimensions LxWxH	15.5 x 6.6 x 5.6 cm

Mikasa Digital Pneumatic Ball Gauge

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