The Brinsea OvaView Candling Lamp is a very effective candler and suitable for most hen duck & goose eggs etc.
Very dark shelled eggs & thick shelled like turkey & guineafowl etc. would benefit from the high-intensity version.
The Ova View is battery powered using 4 AA batteries (included) so can be used on broody hens at the nest as well as in the incubation room.
It uses a high output, high efficiency LED illumination - so no bulbs to replace or overheating the eggs during inspection.
The OvaView is designed to either be hand-held or can be placed on a table and the eggs placed on top.
It comes with a black ring to seal the unit against the egg shell for easy viewing with no light shining back at the viewer.
I can also be used in conjunction with the Ova-Scope for detailed inspection and education without fear of overheating the egg contents.