06 Classify method of pitch measurement and explain any one of them 07 Explain measurment of major, minor and effective diameter of internal threads 08 Write short not on best wire size for measurment of pitch diameter 09 10 State the advantages disadvantages and application of gear drive 11 12 13 14 15 16 17 Describe the construction and working of Tool maker's microscope. With neat sketch explain the terminology of spur gears. Explain various forms of gear teeth. Describe with neat sketch the construction and use of gear tooth vernier caliper. Explain error formation in manufacturing of the gears. Name the various methods used for measurement of tooth thickness and explain Parkinson gear tester with neat sketch. Explain different types of standard gear tooth systems Write short note on constant chord and david brown method for gear tooth measurement