cross staff

level

chain

prismatic compass

(i), (iii), (ii)

(i), (ii), (iii)

(ii), (iii), (i)

(iii), (i), (ii)

tightening the capstan-headed nuts of level tube

measurement of horizontal angles only

measurement of vertical angles only

measurement of both horizontal and vertical angles

transiting

reversing

plunging

swinging

the length of telescope

the diameter of vertical circle

the diameter of lower plate

the diameter of upper plate