Model Engine Spark Plug by Ed Ellison, date unknown
This small surface-gap plug has an overall length is .780 inch, 10-32 thread, 7mm hex.
See Our Miniature Spark Plug Collection at: www.flickr.com/photos/15794235@N06/albums/72157651839098937
See Our Miniature Engine Collection at: www.flickr.com/photos/15794235@N06/albums/72157602933346098
Visit Our Photo Albums at: www.flickr.com/photos/15794235@N06/sets
Courtesy of Paul and Paula Knapp
Miniature Engineering Museum
Model Engine Spark Plug by Ed Ellison, date unknown
This small surface-gap plug has an overall length is .780 inch, 10-32 thread, 7mm hex.
See Our Miniature Spark Plug Collection at: www.flickr.com/photos/15794235@N06/albums/72157651839098937
See Our Miniature Engine Collection at: www.flickr.com/photos/15794235@N06/albums/72157602933346098
Visit Our Photo Albums at: www.flickr.com/photos/15794235@N06/sets
Courtesy of Paul and Paula Knapp
Miniature Engineering Museum