Question

With the help of _____ we get Step By Step Movement.

(1) Loose Dog

(2) Rigid Dog 

(3) Escapement Wheel

(4) All of the above 

• A. (1) and (2) only
• B. (1) only
• C. (4) only
• D. (3) only

Answer 1

Answer:

C. (4) only