01-27-2017, 05:02 PM
I wondered what the screw adjustment was for Terry. Now I know. Evidently these two shadowmeters don't have a magnet like other Philcos do. They do have a spring and an adjustment screw. It's interesting to know that the purpose of the magnet or spring is to center the shadow. Thanks for the information.
John
"I see," said the blind man as he picked up his hammer and saw.
John
"I see," said the blind man as he picked up his hammer and saw.