Abstract: A system, method and apparatus for detecting moisture leaks in roofs and for providing a visual alert regarding such leaks, and which does not require puncturing or compromise of the roof membrane, comprises a dual part moisture detection and indicator system which comprises a wicking sensor, a wicking portion, a non-electronic trigger portion below the membrane, which is enabled to receive a non-electronic signal from the wicking portion and a non-electronic indicator portion above the membrane which is enabled to receive a non-electronic signal from the trigger portion and to thereafter produce a notification of a leak.

Abstract: Apparatus for the practicing of golf swings has a club member to be swung by a user in simulation of the swinging of a golf club, the club member having a simulated golf club handgrip and a source of radiation for providing a beam extending from one end of the club member in the longitudinal direction of the club member, the beam having a flat leading side. Sensors responsive to the radiation for sensing the swinging of said club member are disposed in a predetermined array in the vicinity of a simulated golf ball impact location for providing sensor signals in response to the passage of the beam over the array. The sensor signals are processed for providing first signals corresponding to the direction of travel of the beam, second signals corresponding to the speed of travel of the beam and third signals corresponding to the orientation of the beam.