Egg candler

Egg candler

A light shield that allowed only a spot of light about the size of an egg to shine out. Typically, such a shield was a metal chimney for a coal oil light. About halfway up the chimney there was a hole approximately the size of an egg. By holding an egg in front of the hole (light source), it was possible to detect such things as embryos.
1001 Words and Phrases You Never Knew You Didn’t Know by W.R. Runyan Copyright © 2011 by W.R. Runyan
Mentioned in ?
References in periodicals archive ?
Procedure of in ovo supplementation: Initially, egg candling was performed to detect the site of in ovo supplementation site and then eggs were held in the specially designed egg holder with egg Candler. On the conformation of the embryonic position, eggs were disinfected with 70% ethanol swab and then punctured with sterilized egg shell boring needle gently.
Using an egg candler (Hong Fu, New Taipei City, Taiwan) as a light source, a camera (D5200, Nikon, Tokyo, Japan) set to the complete manual mode, an aperture of f/13, and a shutter speed of 2.5 s were used to capture the images of eggs at the same position every 3 days.
She was an egg candler and cleaner, and a bookkeeper for the family business.