The general principles of visit to or inspection of a locus in quo. These are:
1. There is no rule of law which determines at what stage in a trial a visit or inspection must be made.
2. A court should undertake a visit to the locus in quo where such a visit will clear a doubt as to the accuracy of a piece of evidence.
3. Where there are two conflicting evidence adduced by parties to a case, it is necessary to visit the locus in quo if such a visit can resolve the conflict in the evidence.
4. Where a trial judge makes a visit to the locus in quo, it is not proper for him to treat his perception at the scene as a finding of fact without evidence of such perception being given by a witness either at the locus or later in court after the inspection.
5. On a visit to the locus in quo, it is necessary for the trial judge to make a record in the course of the proceedings on what transpires at the scene. However, if the trial judge failed to make the record but made statement in his judgment about the visit, such statement would be taken as accurate account of what happened and therefore final, unless of course the contrary can be established by the party that impugns the record.
Where a visit is made to a locus in quo, evidence of witnesses can be received at the scene or in court later. But the parties in that case, must be given the opportunity of hearing the evidence of the witnesses, and where necessary, be offered the opportunity of cross-examining the witnesses and commenting on the evidence. Lambu v. Isyakau (2012) All FWLR (Pt. 640) 1295 Pp.1364-1365, paras. F-E; Ejidike v. Obiora (1951) 13 WACA 270; Seismograph Services (Nig.) Ltd. v. Akporovo (1974) 6 SC 119; Seismograph Services (Nig.) Ltd. v. Onokpasa (1972) 1 All NLR 343; Nwizuk v. Eneyok (1953) 14 WACA 354; Maji v. Shafi (1965) NMLR 33; Bello v. Kassim (1969) 1 NMLR 148.