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A tachometer is generally a transit theodolite having a telescope fitted with a stadia diaphragm i.e., a telescope equipped with two horizontal hairs called stadia hairs. The additional hairs are equipped from the central one and are also called stadia lines. Characteristics of tachometer: - Value oRead more
A tachometer is generally a transit theodolite having a telescope fitted with a stadia diaphragm i.e., a telescope equipped with two horizontal hairs called stadia hairs. The additional hairs are equipped from the central one and are also called stadia lines.
Characteristics of tachometer: –
- Value of the multiplying constant (f/i) should be 100.
- The magnification of the telescope is between 20 to 30.
- The eye-piece should be greater magnification.
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