1. Up to which angle sine bars can measure the angles?
a) 45 degree
b) 60 degree
c) 90 degree
d) 120 degree
2. Which of the following is not used in making of sine bars?
a) High carbon
b) High chromium
c) Corrosion resistant steel
d) Aluminium
3. What is sine centre?
a) Centre of sine bar
b) Sine bar with block holding centres
c) Sine bar with hole in centre
d) Sine bar with hollow rod in centre
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