Abstract: The present invention is designed to instrumentation and methods for providing runway obstacle clearance for instrument and non-instrument landing of an aircraft. The device provides a simple method of determining if there are any obstacles within the FAA required path of landing of an aircraft. Typically, there are trees and other obstacles which have to be precisely located to determine if such trees and other obstacles are within the required clearance space for permitted landing of an aircraft. This is particularly important when visual verification of the landing of the aircraft is required.

Abstract: The present invention is designed to instrumentation and methods for providing runway obstacle clearance for instrument and non-instrument landing of an aircraft. The device provides a simple method of determining if there are any obstacles within the FAA required path of landing of an aircraft. Typically, there are trees and other obstacles which have to be precisely located to determine if such trees and other obstacles are within the required clearance space for permitted landing of an aircraft. This is particularly important when visual verification of the landing of the aircraft is required.

Abstract: There is a method of capturing, removing or collecting the particulate matter from a fluid containing a toxic liquid reaction and particulate matter produced from the reaction. The method includes partly or completely disposing a screen into the toxic fluid. Mixing the toxic fluid allowing the particulate matter to contact the screen. Moving the screen to capture the particulate matter on the screen. Removing the particulate matter from the screen by washing or scraping. There is also a cleaning apparatus to capture, remove or collect particulate matter from a toxic fluid. A cleaning apparatus contains at least a screen and a structure securing the screen. The cleaning apparatus can optionally include a scraping or washing means, a drive means, a flow inducer and a housing structure.

Abstract: There is a method of capturing, removing or collecting the particulate matter from a fluid containing a toxic liquid reaction and particulate matter produced from the reaction. The method includes partly or completely disposing a screen into the toxic fluid. Mixing the toxic fluid allowing the particulate matter to contact the screen. Moving the screen to capture the particulate matter on the screen. Removing the particulate matter from the screen by washing or scraping. There is also a cleaning apparatus to capture, remove or collect particulate matter from a toxic fluid. A cleaning apparatus contains at least a screen and a structure securing the screen. The cleaning apparatus can optionally include a scraping or washing means, a drive means, a flow inducer and a housing structure.