Can You Identify This Seed Corn Grader?

Let’s play the name game!

Farm Collector received these photos of a corn grader and the following letter from reader Harry Roland:

“I am restoring this seed corn grader, and need information about what the name is. The letters that can be distinguished read O – – I – N S. The middle letter could be an E, H or K. This device could be about 100 years old. I hope someone can help in its identification.”