About: Combination square is a research topic. Over the lifetime, 20 publications have been published within this topic receiving 101 citations. The topic is also known as: combo square & adjustable square.
TL;DR: The Mad Square Device as mentioned in this paper has a rotatable straight edge which pivots from the corner joint to a 90° and 45° angle on each side of the horizontal position, which can be used in determining the relative angle between two pre-determined points defined by the extensions of the pivotally attached blade and head of the carpentry square.
Abstract: The Mad Square invention has a detachable spring loaded marker device which accepts replaceable lead points and for which the pencil lead can be adjusted to the right length by tightening the adjusting screw. The detachable marking device can be slid along either of the two sides of the horizontal straight edge with ruler marks on each edge of the blade segment to conveniently draw the desired angle. The combination square has a rotatable straight edge which pivots from the corner joint to a 90° and 45° angle on each side of the horizontal position. Other angles may be selected and used with this device which has a protractor device to measure the precise angle of the blade. The straight edge can be rotated and locked in position to establish a precise pre-determined angle or can be used in determining the relative angle between two pre-determined points defined by the extensions of the pivotally attached blade and head of the carpentry square. The Mad Square Device also has a built-in retractable tape measure from which the tape is pulled out from the corner to accurately and efficiently measure rafters, joices, and similar applications. The tape measure bracket is affixed by a thumb screw to the head of the Mad Square Device and can be removed from one end of the head of the device and positioned at the opposite end of the head to receive the retractable tape measure, or, alternatively, an electronic distance meter.
TL;DR: A fastener is described having a head formed with a recess which accommodates a square head driver, symmetrical drivers, such as PHILLIPS™ style drivers, asymmetrical style cross head drivers such as POZIDRIV® style drivers and combination square and cross drivers without compromising performance of the drivers.
Abstract: A fastener is described having a head formed with a recess which accommodates a square head driver, symmetrical drivers, such as PHILLIPS™ style drivers, asymmetrical style cross head drivers, such as POZIDRIV® style drivers, and combination square and cross drivers without compromising performance of the drivers.
TL;DR: In this paper, a folding method of a combination square box and a fabrication method for a paper container is described. The folding method is based on the combination of two squares and a right-angled isosceles triangle.
Abstract: The invention relates to a folding method of a combination square box, and to a fabrication method of a paper container The combination square box comprises four similar components; the fabrication method of the components comprises the following steps: collecting rectangle paper with a length-to-width ratio of 3:2, making into a three-dimensional component of the combination square box formed of two squares and a right-angled isosceles triangle, circularly inserting the four similar three-dimensional components, respectively inserting the two layers of paper of the single-interlayer square of component A into the two pieces of interlayer of the double-interlayer square of component B, in this way, inserting B into C, inserting C into D, and inserting D into A to obtain the square box The preparation of the components of the combination square box is easy, and the combination operation of interspersing is simple; the structure of four sides of the square box is similar, so that the square box is firm and durable, and has strong practicability; a variety of colors for matching is possible due to the combination form, and combination colors can be in diverse forms, so that the sense of beauty as well as the ornamental value are significantly improved