What should you do if you detect that your instrument has a collimation error?

When a collimation error is detected in surveying instruments, it is essential to address the issue appropriately to ensure precise measurements. Taking the instrument to a repairman is vital because collimation errors can indicate underlying problems that may require professional adjustment or calibration expertise. A repairman has the specialized knowledge and tools necessary to diagnose and resolve such issues, ensuring that the instrument functions correctly.

Attempting to adjust the instrument yourself might lead to further inaccuracies or damage, as proper calibration often requires an understanding of the instrument's mechanics and optics. Ignoring the error can result in consistently inaccurate readings, which compromises the integrity of survey data. Calibration, while a necessary routine maintenance task, is generally performed by professionals in cases of detected errors, especially when it pertains to critical aspects like collimation.

In summary, the correct action in the presence of a collimation error is to consult a repairman to ensure that the instrument is restored to proper working order.