Calibrated layout tools with calibrated offset surfaces to provide for the collinear marking of a workpiece or multiple workpieces are disclosed. The calibrated layout tools allow for accurate marking of work pieces such as the precise layout and marking of dovetail joints for example. The calibrated layout tools provide a new and efficient approach to laying out and marking joinery without common and frequently occurring measurement errors. The calibrated layout tools accommodate various joint geometries, including size, spacing and angle for use in a variety of applications ranging from small decorative objects like jewel boxes to large-scale traditional construction methods like timber framing.

A projection method, which is executed by a projection device, for projecting drawing data for a building onto a projection plane of the building under construction includes: measuring a distance from each of three or more points which are not aligned in a straight line and are on either of two non-parallel straight lines on the projection plane to the projection device using a distance meter included in the projection device; and projecting the drawing data onto a projection position on the projection plane which is determined based on the distance measured and the angle of the distance meter at the time at which the distance is measured.

Method and device for marking a workpiece surface (2A) of a metal workpiece (2), in which a welding torch (3) comprising a welding wire electrode (4) is guided along the workpiece surface (2A) to be marked and meanwhile a wire end (4A) of the welding wire electrode (4) is moved towards and away from the work-piece surface (2A) to be marked, wherein an electric voltage (U) present at the welding wire electrode (4) and/or an electric current (I) flowing through the welding wire electrode (4) bring about electric sparks, which bring about material removal and/or material alteration at the workpiece surface (2A) of the metal workpiece (2) to mark the workpiece surface (2A).

A measuring tape device may include a housing having an aperture, a reel assembly defining an axis, a blade having a first end configured to extend from the housing through the aperture and a second end configured to be wound on the reel assembly, and a transverse aperture extending through the housing in a direction substantially parallel to the axis.

A measuring tape device may include a housing having an aperture, a reel assembly defining an axis, a blade having a first end configured to extend from the housing through the aperture and a second end configured to be wound on the reel assembly, and a transverse aperture extending through the housing in a direction substantially parallel to the axis.

A mobile printing robot includes a windbreak to reduce wind-induced deflection of ink droplets emitted from a printhead of the mobile printing robot. The printhead may have a comparatively large throw height to aid in permitting obstacles, such as particles from safely passing under the printhead without damaging the printhead or cause the printhead to become stuck. The windbreak may be implemented using resiliently compliant sections that block the wind but accommodate the passage of particles or other obstacles.

An example combination tool for marking, measuring, and checking level includes a holder for a marking device (e.g., a soapstone). The holder has a body formed by a first side, a second side, a front side, a back side a top side, and a flat bottom side. A securement releasably secures the marking device at least partially within the body. Turning the securement in a first direction tightens the marking device within the body of the holder. Turning the securement in a second direction loosens the marking device in the body of the holder so that the marking device slides in and out through an opening formed in the front side of the body to adjust a position of the marking device for use in marking. The example combination tool may also include measuring markings, a level, a clip, and a grip.

An example combination tool for marking, measuring, and checking level includes a holder for a marking device (e.g., a soapstone). The holder has a body formed by a first side, a second side, a front side, a back side a top side, and a flat bottom side. A securement releasably secures the marking device at least partially within the body. Turning the securement in a first direction tightens the marking device within the body of the holder. Turning the securement in a second direction loosens the marking device in the body of the holder so that the marking device slides in and out through an opening formed in the front side of the body to adjust a position of the marking device for use in marking. The example combination tool may also include measuring markings, a level, a clip, and a grip.

Provided are a foundation bolt pre-embedding positioning mold and a method for mounting a foundation bolt, including a centerline positioning assembly and a vertical positioning assembly for mounting on foundation steel bar, wherein the centerline positioning assembly includes a positioning template horizontally arranged, a positioning portion is formed on the positioning template, the positioning portion extends along a first direction, the positioning portion is used to overlap with a preset centerline in a vertical direction, and the first direction is a length direction of the positioning template; the positioning template is configured to be mounted on the vertical positioning assembly, so as to fix a position of the positioning template in the vertical direction; and a first mounting hole is formed in the positioning template, so as to vertically fix the foundation bolt to the positioning template.

Provided are a foundation bolt pre-embedding positioning mold and a method for mounting a foundation bolt, including a centerline positioning assembly and a vertical positioning assembly for mounting on foundation steel bar, wherein the centerline positioning assembly includes a positioning template horizontally arranged, a positioning portion is formed on the positioning template, the positioning portion extends along a first direction, the positioning portion is used to overlap with a preset centerline in a vertical direction, and the first direction is a length direction of the positioning template; the positioning template is configured to be mounted on the vertical positioning assembly, so as to fix a position of the positioning template in the vertical direction; and a first mounting hole is formed in the positioning template, so as to vertically fix the foundation bolt to the positioning template.