Meazure - What are the dimensions of that image? How big is this window?
Cargoscan Pallet and Parcel Dimensioners - Cargoscan is a dimensioning systems that can helps to operate more efficiently and profitably as space is a scarce resource in both the transport and warehousing business.
Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.
Cubic Ruler - Simple screen ruler utility
ScreenRuler - ScreenRuler lets you measure objects on your Ubuntu desktop using six different metrics.
Dimension Data - A global systems integrator and managed services provider for hybrid IT.