What is the first step in checking transit accuracy?

Setting the transit on a stable surface is indeed an essential first step in checking its accuracy. A stable surface ensures that the transit remains level during measurements, which is crucial because any movement or instability could lead to inaccurate readings. When the transit is placed on an uneven or shaky surface, even minor shifts can throw off the alignment and compromise the entire survey process.

Stability is fundamental to accuracy in surveying. If the instrument is not secure, adjustments will be necessary throughout the process, leading to potential errors in the data collected. Therefore, prioritizing a stable setting allows for a solid foundation upon which all subsequent measurements and checks are performed, ensuring reliability in the results.