Plumb Pro - This instrument has been used since the time of the ancient Egyptians by bricklayers, masons, and carpenters to make sure that their constructions are perfectly upright.
A plumb-bob or a plummet is a weight, normally has a pointed tip, it's supposed to be suspended from a string and used as a vertical reference line, or plumb-line
Clinometer Pro (Inclinometer) - Finally a quality Inclinometer or Clinometer.
An inclinometer or clinometer is an instrument for measuring angles of slope (or tilt), elevation or inclination of an object with respect to gravity
Caliper Pro - Finally a portable ruler or caliper that looks nice and has plenty of functionality.
A caliper (British spelling also calliper) is a device used to measure the distance between two symmetrically opposing sides.
This digital caliper shows results in inches and centimeters (cm-mm)
A+ Protractor - In geometry, a protractor is a circular or semicircular tool for measuring an angle or a circle. The units of measurement utilized are usually degrees
A+ Ruler - A ruler, or rule, is an instrument used in geometry, technical drawing and engineering/building to measure distances and/or to rule straight lines. Strictly speaking, the ruler is essentially a straightedge used to rule lines and the calibrated instrument used for determining measurement is called a "measure"
A productivity and cost saving tool for engineers, architects, and contractors to be able to access drawings in the field, without the need to carry expensive and bulky drawings
Video Laser Level - This unique application utilizes the iPhone 3.1 Video Overlay support to position virtual red laser lines over your live video.
The laser lines can be used to correctly align and level objects like picture frames, furniture, etc