1. 1 and 4
2. 1 and 2
3. 2 and 3
4. 3 and 4
1 and 4
1. In a retrograde vernier, (n-1) divisions on the primary scale are divided into n divisions on the vernier scale.
2. A double vernier consists of two simple verniers placed end-to-end forming one scale with the zero in the center
3. In an extended vernier, (2n+1) primary divisions are divided into n divisions on the vernier.
4. In a direct vernier, (n+1) primary divisions are divided into n equal divisions on the vernier scale
In a retrograde vernier, (n-1) divisions on the primary scale are divided into n divisions on the vernier scale.
1. 630.82 m
2. 680.82 m
3. 735.82 m
4. 780.92 m
735.82 m
1. 185.5 m2
2. 187.5 m2
3. 189.5 m2
4. 289.5 m2
187.5 m2
1. 940
2. 980
3. 1980
4. 900
940
1. +0.055 m
2. +0.005 m
3. -0.055 m
4. -0.005 m
+0.055 m
1. 3.5 m
2. 4.0 m
3. 5.0 m
4. 6.0 m
5.0 m
1. 1, 2, 3 and 4
2. 1, 2 and 4 only
3. 1, 2 and 3 only
4. 2, 3 and 4 only
1, 2, 3 and 4
1. 199.3
2. 201.7
3. 200.0
4. 198.2
198.2
1. Transiting and inverting
2. Face left and face right
3. Right swing and left swing
4. Gauging and sounding
Gauging and sounding