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A chalk line or chalk box is a tool for marking long, straight lines on relatively flat surfaces, much further than is practical by hand or with a straightedge. They may be used to lay out straight lines between two points, or vertical lines by using the weight of the line reel as a plumb line .
A chalk line or chalk box is a tool for marking long, straight lines on relatively flat surfaces, much farther than is practical by hand or with a straightedge. It is an important tool in construction and carpentry, the working of timber in a rough and unplaned state, as it does not require the timber to have a straight or squared edge formed ...
In software engineering, the blackboard pattern is a behavioral design pattern [1] that provides a computational framework for the design and implementation of systems that integrate large and diverse specialized modules, and implement complex, non-deterministic control strategies.
A plumb bob, plumb bob level, or plummet, is a weight, usually with a pointed tip on the bottom, suspended from a string and used as a vertical direction as a reference line, or plumb-line. It is a precursor to the spirit level and used to establish a vertical datum. It is typically made of stone, wood, or lead, but can also be made of other ...
Chalk is considered by seasoned stone carvers as one of the most difficult of stones to shape, as the material may literally powder away in your hands, if you are not delicate with the handling. A chalk can also have many defects and voids in its structure, this makes chalk carving a very difficult and precise art.
The new material is often chalk, a soft and white form of limestone, leading to the alternative name of chalk figure for this form of art. [ citation needed ] Hill figures cut in grass are a phenomenon especially seen in England , where examples include the Cerne Abbas Giant , the Uffington White Horse , and the Long Man of Wilmington , as well ...
A skirret is an archaic form of chalk line. It is a wooden tool shaped like the letter "T", historically used to ensure the foundation of a building was straight by laying down string as a marker. Today it is obsolete and little known, save for its use in some Freemasonry ceremonies. [1]
A chalk outline, which was drawn around a person laying on the ground. A chalk outline is a temporary outline, usually of a person, drawn on the ground, usually outlining evidence at a crime scene. The outline provides context for photographs of the crime scene, and assists investigators in preserving the evidence.