The present invention is a new multipurpose speed square that is easily utilized by any workman who typically requires a means for measuring, aligning, leveling, etc. The speed square is multi-functional, of simple construction, lightweight and portable. The speed square can be easily carried as an all-in-one tool and thus eliminates the need for additional tools, or the like. The speed square that can be manufactured from substantially any suitable material of engineering choice, is cost effective to produce, manufacture, easily marketed and easily sold.

A multifunctional woodworking ruler includes a horizontal ruler, a vertical ruler, two horizontal slidable measurement blocks, a slidable stop block and a vertical slidable measurement device, where the vertical ruler is located at a middle of the horizontal ruler and is perpendicular to the horizontal ruler, each horizontal slidable measurement block is slidably connected to the horizontal ruler, the horizontal slidable measurement blocks are located on two sides of the vertical ruler respectively, the slidable stop block is located at one end of the horizontal ruler, the vertical slidable measurement device is slidably connected to the vertical ruler, and the vertical slidable measurement device includes a vertical slidable measurement block and a fixing plate located at the end of the vertical slidable measurement block away from the horizontal ruler. The detachable lining can be directly replaced, thereby avoiding abrasion to the ruler, and prolonging service life of the ruler.

A carpenter square includes a body including a first, second, and third edges. A fence is pivoted to the first edge for movement among first, second, and third positions. In the first and second positions, the fence is normal to the body. In the third position, the fence is coplanar to the body. A hinge assembly pivots the fence to the body and includes a notch in the body, a recess in the notch, and a tab projecting from the fence and fit over the pin for reciprocating and swinging movement. The tab moves between a neutral stance, in which the tab is mis-registered with the recess and disables movement of the fence among the first, second, and third positions, and an advanced stance, in which the tab is registered with the recess and enables movement of the fence among the first, second, and third positions.

A stepwise and stepless adjustable square, including: a stock; a blade; a first alignment structure; a second alignment structure; a spring device; 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 second alignment structure is moved axially away from the first alignment structure, whereby the first and second alignment structures are separated from each other, and a first surface associated with the blade is brought into frictional engagement with a second surface associated with the stock for stepless adjustment.

A carpenter tool includes a triangular body having a hypotenuse edge opposite a right corner, a first edge extending between the right corner and the hypotenuse edge, and a second edge extending between the right corner and the hypotenuse edge opposite the first edge. A fence is pivoted to the first edge for movement between first and second positions. In the first position, the fence is normal to the triangular body. In the second position, the fence is coplanar to the triangular body.

A speed square is provided including a triangular flat plate having measurement markings indicated on at least one face, a T bar affixed to, and extending along, the length of a first side of the triangular flat plate, and an extension element hingedly connected to an end of second side of the triangular flat plate opposite the T bar. The extension element having measurement markings indicated on at least one face, such that the measurement markings of the triangular flat face continue on the extension element.

A stepwise and stepless adjustable square, including: a stock; a blade; a first alignment structure; a second alignment structure; a spring device; 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 second alignment structure is moved axially away from the first alignment structure, whereby the first and second alignment structures are separated from each other, and a first surface associated with the blade is brought into frictional engagement with a second surface associated with the stock for stepless adjustment.

A speed square is provided including a triangular flat plate having measurement markings indicated on at least one face, a T bar affixed to, and extending along, the length of a first side of the triangular flat plate, and an extension element hingedly connected to an end of second side of the triangular flat plate opposite the T bar. The extension element having measurement markings indicated on at least one face, such that the measurement markings of the triangular flat face continue on the extension element.

An adjustable T-square device and method of use is shown and described herein. The adjustable T-square has a plurality of apertures with at least one locking detent to set precise angles. The adjustable T-square has a locking pin to further engage a ruler portion to a head portion to minimize error when using the device.

A drywall multi-tool assembly includes a block that has a plurality of intersecting sides such that the block has a triangular shape. A saw is pivotally coupled to the block for cutting drywall from a plurality of orientations. A knife is slidably coupled to the block for cutting the drywall. A ruler is pivotally coupled to the block for making measurements and a square is pivotally coupled to the block for measuring a right angle. A first bubble level is coupled to the block to determine level along a first axis. A second bubble level is coupled to the block to determine level along a second axis. A rasp is coupled to the block wherein the rasp is configured to abrade the drywall.