Elementary Mechanical Drawing: Theory and Practice, with Chapters on Geometrical Drawing, Mensuration and Reproduction of Drawings; a Text-book for Technical, Normal, Secondary, Trade and Vocational SchoolsMcGraw-Hill, 1925 - 251 σελίδες |
Συχνά εμφανιζόμενοι όροι και φράσεις
1.-Make a drawing arc intersecting axis beam compass bell crank bill of material blade bracket celluloid center line chord circular arcs circumference compass construction cross-section cubic inches cylinder diameter dimensions distance Divide draftsman draw a line draw an arc draw arc draw lines draw small arcs drawing showing edge ellipse end view erasure example front view Geometrical Given Circle given line hexagonal hidden lines horizontal lines illustrated inch from H inches long instruments letters line drawn mechanical drawing method mortise and tenon NOTE number of equal orthographic projection paper pencil Pentagonal Pyramid perpendicular piece placed planes of projection plate shows polygon practice prism Problem 1.-Draw Problem 2.-Make profile plane projection lines radius revolved section right angles rubber scale shade lines shown shows two views side view space square inches straight line student surface T-square taboret tangent top view triangle true length vertical plane weight width
Δημοφιλή αποσπάσματα
Σελίδα 187 - Draw two diameters AB and CD at right angles to each other. Bisect the radius eB.
Σελίδα 215 - Angle. An obtuse angle is greater than a right angle and less than two right angles.
Σελίδα 207 - ... possible ways to define the circumference of a circle. Statically, the circumference of a circle can be defined as the locus of all points in a plane a given distance from some point in the plane which we designate as the center. On the other hand, we could define the circumference kinematically as the curve generated by a point moving in a plane in such a way that it is always the same distance from some point in the plane designated as the center and it returns to the position of departure....
Σελίδα 210 - One of the conic sections, being a curve formed by the intersection of the surface of a cone with a plane parallel to one of its sides.
Σελίδα 227 - Example. — -Find the length of the arc of a circle when R = 9 inches and N — 74 degrees. Thus, L = .0174RN = .0174 X 9 X 74 = 11.58 inches. Example. — Find the length of the arc of a circle whose radius is 7.5 inches and the number of degrees subtended by the arc is 67° 15'.
Σελίδα 215 - Thus when it is said that the sum of the three angles of any triangle is equal to two right angles, this is a theorem, the truth of which is demonstrated by Geometry.
Σελίδα 233 - The volume of a spherical pyramid is equal to the area of its base multiplied by one-third the radius of the sphere.
Σελίδα 233 - The lateral area of a frustum of a regular pyramid is equal to one-half the sum of the perimeters of its bases, multiplied by...
Σελίδα 179 - To Draw a Line Perpendicular to a Given Line from a Point on the Line, or Outside the Line.
Σελίδα 34 - In the same manner the circumference of a circle may be divided into any number of equal spaces, FIG.