eastern side of the true meridian

western side of the true meridian

southern side of the true meridian

none of the above

77° N

23° S

13° E

13° W

(i) and (iii)

(i) and (iv)

(ii) and (iii)

(ii) and (iv)

cross staff

level

chain

prismatic compass

(i), (iii), (ii)

(i), (ii), (iii)

(ii), (iii), (i)

(iii), (i), (ii)