Alidad

2 clues
Surveyor's rule with sights: Var.
Upper part of a surveyor's transit
Similar answers:
Aalii
Aaline
Aaliyah
Ablepersonality
Absenceofalice
Absenceofmalice
Acaliberplusacaliber
Actualists
Actualities
Actuality
Actualize
Adad
Adadds
Adads
Adamsalive
Addadzadsado
Addedadeck
Addledadoublelife
Adelaideaustralia
Adrenalin