Smart Tools play.google.com.tools
Measure length, angle, distance, height, direction and sound with your phone.
Smart Tools is a complete package of 5 app sets. It includes 5 Pro sets for a total of 15 tools. In a word, All-in-One.

• Set 1: Length, Angle, Slope, Level - Smart Ruler Pro
• Set 2: Distance, Height, Width, Area - Smart Measure Pro
• Set 3: Compass, Metal detector, GPS - Smart Compass Pro
• Set 4: Sound level meter, Vibrometer - Sound Meter Pro
• Set 5: Flashlight - Smart Light Pro

What's in this version : (Updated : Jul 18, 2013)

• Widget size bug fix on SGS2, Nexus.