1.

Which of the following instruments have both horizon glass and index glass ?1. Optical square2. Line ranger3. Box sextant4. PedometerSelect the correct answer using the code given below :

A. 2, 3 and 4
B. 1, 3 and 4
C. 1 and 3 only
D. 2 and 4 only
Answer» D. 2 and 4 only


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