Locator for survey apparatus

A locator member for cooperatively coupling together with an opposing locator member around a survey apparatus, the survey apparatus comprising at least one profiled region, the locator member comprising:

• at least a first apparatus coupling, the first apparatus coupling configured to connect to a respective first apparatus coupling of an opposing locator member,
• one or more bearing members for bearing against a borehole, and
• wherein:
• an internal profile of the at least first coupling is configured to engage with the at least one profiled region on the survey apparatus to, when the opposing locator member is cooperatively coupled with the opposing locator member around the survey apparatus, constrain a resultant locator on the survey apparatus longitudinally and rotationally;
• and
• wherein the at least first coupling of at least one of the opposing members is configured with a cantilever tab to cooperatively couple to the corresponding opposing member around the survey apparatus, wherein the cantilever tab has a back surface configured to engage with the at least one profiled region.

A locator for positioning and/or stabilising a survey apparatus in a borehole comprising:

• two opposing members each with an apparatus coupling for cooperatively coupling together around a survey apparatus, the survey apparatus comprising at least one profiled region for a locator on the survey apparatus, each opposing member comprising:
• one or more bearing members for bearing against a borehole, and
• wherein:
• the apparatus coupling is configured to connect to an apparatus coupling of the corresponding opposing member around the survey apparatus, and
• an internal profile of the at least first apparatus coupling is configured to engage with the at least one profiled region to, when one opposing member is cooperatively coupled with the corresponding opposing member around the survey apparatus, constrain a resultant locator on the survey apparatus longitudinally and rotationally,
• wherein the apparatus coupling has a cantilever tab that is configured to, when one opposing member is cooperatively coupled with the corresponding opposing member:
• couple to a corresponding connector on the corresponding opposing member around the survey apparatus, and
• engage, through a back surface of the cantilever tab, with the profiled region on the survey apparatus to constrain the resultant locator on the survey apparatus longitudinally and rotationally.