A series presenting science as a detective story illustrating the connections between events of the past and inventions of the future. Part 5: Traces the connection between medieval astrology, ancient Greek medical manuscripts, the need for precise measuring devices and the invention of such things as the telescope, forged steel and interchangeable machine parts. Part 6: Details many of the changes in building construction and energy usage which occurred...

Includes projects for constructing simple measuring instruments, instructions on the use of metric units, and activities for making measurements.

Tavool TH250 stud finder is a device that is used to determine exact location of framing studs that are located behind the drywall. This Multi-scanner stud finder uses electronic signals to quickly locate edges and center of metal, studs, joists, pipes, live AC wire behind walls, floors and ceilings.