Figure 3-5. Vernier scale and indexes-(type A-1).

TM 9-6685-202-14

Figure 3-5. Vernier scale and indexes-(type A-1).

would coincide. Obviously, the scale reading would be

distance between 632.4 and 632.5, which is 632.47.

between 632.4 and 632.5. By close inspection and

The main scale vernier has an additional graduation

interpolation, the hundredths of a millimeter may be

between each 0.1 line, thus making it possible to read

determined with fair precision. For example, if the

the vernier directly to 0.05 mm.

space between the 5-vernier line and a scale line is half

b. Type A-1 (Modified)

of that between the 4-vernier line and a scale line, it

(1) The main scale is calibrated in

would mean the slide had been raised two-thirds of the

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