When drawing a complex assembly with hidden details, which instrument is crucial for accurately representing hidden lines?
Mini-drafter
Hidden lines show edges of a part that lie behind other surfaces and are not directly visible, and they are drawn as short, evenly spaced dashes.
For a complex assembly these dashes must stay straight, correctly angled and parallel to the true directions of the concealed edges.
A mini-drafter combines a scale, two set squares and a protractor on a parallel-motion linkage.
Because the linkage keeps its edges parallel wherever it is moved, it can rule accurate straight lines at any required angle and repeat them in parallel across the sheet.
That capability makes it the crucial instrument for laying out neat, correctly aligned hidden lines in the assembly.
A protractor only measures angles, a scale only measures and marks length, and an eraser only removes marks, so none of them can actually draw the aligned dashed lines.
Hence, the answer is Mini-drafter.
Similar Questions
Match the following, according to lettering and numbering (uppercase lettering) as per
BIS SP: 46-2003.
Width (W) Capital letters
(A) 5 (I) W
(B) 6 (II) A, M, Q, V, X, Y
(C) 7 (III) B, D, G, H, K, N, O, P, R, S, T, U and Z
(D) 9 (IV) C, E, F, LWhich of the following statements is/are true about Non-Functional Dimensions (NF) in engineering drawing?
Statement 1: Non-functional Dimensions are shown without limits, as they do not affect the functionality of the component or space.
Statement 2: Non-Functional Dimensions are typically used for reference purposes only, and do not impact the assembly or performance of the component or space.Match the following designations of sheets with their respective trimmed sizes in length and breadth.
Designation Trimmed Size
A) A0 P) 297 × 420
B) A1 Q) 420 × 594
C) A2 R) 594 × 841
D) A3 S) 841 × 1189engineering drawings recommend(s) 20 mm wide margins for sheet sizes AO and A1 in
In a project involving the design of a pipeline for a building, which technical drawings would need to be referenced together?
Match the correct length and breadth of the Trimmed sizes of sheets.
Designation
A. A0
B. A1
C. A2
D. A3
Trimmed size
P. 297 × 420
Q. 420× 594
R. 594 × 841
S. 841 × 1189
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In an engineering drawing, which letters written on the dimension indicates that it is extra information and NOT really required?
A ________ diagram is a schematic drawing that shows the relationships in a system, using simple shapes for the entities.
The notation 2 × Ø6 means______.
Important Questions from Engineering Drawing
What is a polygon with 12 sides called?
Wiring diagrams, circuit diagrams and electrical installation drawings are examples of which of the following types of engineering drawings?
Which of the following is NOT an element of dimensioning ?
Which of the following drawing instruments is used to draw smooth curves/arcs?
_______ is a dimension that is essential to the functioning of the component or space that is generally shown with limits.
