Digression
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In some cases it is more efficient to use an articulating stylus systems instead of using many different stylus systems which require to change them often.

An articulating probe rotates the stylus around two axes and can be fixed in different positions, thus enabling to probe hard to reach features.

Articulating stylus system in different articulating positions,
from Primar MX 4, Mahr

Articulating stylus system RDS, Zeiss