A gauge for verifying that an airfield's runway and taxiway markings are a specific size. It is a complete reference tool for assessing markings manually by a technician; that is a tool to help reduce the subjectivity of the assessment by the technician. The gauge is flexible and can be rolled or folded for transport. In order to make the gauge easier to use, the measurements are made using very specifically placed and sized slots that conform to ideal airfield markings. Graduation markings at the end of the slots help the technician determine the size of marking discrepancies.

A gauge for verifying that an airfield's runway and taxiway markings are a specific size. It is a complete reference tool for assessing markings manually by a technician; that is a tool to help reduce the subjectivity of the assessment by the technician. The gauge is flexible and can be rolled or folded for transport. In order to make the gauge easier to use, the measurements are made using very specifically placed and sized slots that conform to ideal airfield markings. Graduation markings at the end of the slots help the technician determine the size of marking discrepancies.

This invention relates to a method for determining a wear state of a chisel, a chisel holder, and/or a chisel holder replacement system equipped with a chisel and chisel holder. For this method to give the user qualitative and quantitative information about the wear, according to one embodiment of this invention, a position of at least one point of the chisel and/or the chisel holder is determined by a contactless measurement method and a corresponding measurement result is compared in a switching unit to a reference value stored in a memory device.

This invention relates to a method for determining a wear state of a chisel, a chisel holder, and/or a chisel holder replacement system equipped with a chisel and chisel holder. For this method to give the user qualitative and quantitative information about the wear, according to one embodiment of this invention, a position of at least one point of the chisel and/or the chisel holder is determined by a contactless measurement method and a corresponding measurement result is compared in a switching unit to a reference value stored in a memory device.

A stepwise and stepless adjustable square for use in carpentry, including: a stock; a blade; a first alignment structure; a second alignment structure; a spring device; a spring expansion-restricting element; and a knob movable between a first position and a second position, wherein in the first position the first and second alignment structures at certain angles between the stock and the blade align and engage such that a force of the spring device is reduced compared to the force at angles where the first and second alignment structures do not align for stepwise adjustment, and wherein in the second position the first alignment structure is moved axially away from the second alignment structure for stepless adjustment.

A stepwise and stepless adjustable square for use in carpentry, including: a stock; a blade; a first alignment structure; a second alignment structure; a spring device; a spring expansion-restricting element; and a knob movable between a first position and a second position, wherein in the first position the first and second alignment structures at certain angles between the stock and the blade align and engage such that a force of the spring device is reduced compared to the force at angles where the first and second alignment structures do not align for stepwise adjustment, and wherein in the second position the first alignment structure is moved axially away from the second alignment structure for stepless adjustment.

A tape measure including a reinforced or coated tape measure blade is provided. The reinforcement layer is thicker than the metal inner layer of the tape blade. The reinforcement layer provides a reinforced tape blade such that the elongate tape blade may have a pinch load threshold of greater than 30 lbs. and/or a pinch height at break of less than 1.5 mm.

A tape measure including a reinforced or coated tape measure blade is provided. The reinforcement layer is thicker than the metal inner layer of the tape blade. The reinforcement layer provides a reinforced tape blade such that the elongate tape blade may have a pinch load threshold of greater than 30 lbs. and/or a pinch height at break of less than 1.5 mm.

A stepwise adjustable square for use in carpentry, including: a stock; and a blade rotatable relative to the stock around an axis of rotation between a first extreme position at zero degrees, where the blade is parallel to the stock and partly provided in a space of the stock, and a second extreme position at about 270 degrees, where the blade is substantially perpendicular to the stock.

A stepwise adjustable square for use in carpentry, including: a stock; and a blade rotatable relative to the stock around an axis of rotation between a first extreme position at zero degrees, where the blade is parallel to the stock and partly provided in a space of the stock, and a second extreme position at about 270 degrees, where the blade is substantially perpendicular to the stock.