Omer E Robbins Compound Sine Plate. Badge is missing but based on the design this looks like an older Omer E Robbins Co out of Detroit MI. This would have had a magnet with a cord that has since been removed so it is not magnetic. 4 holes have been nicely tapped in the top and 2 custom hold downs are included. The top surface measures a little under 7 1/4 x 4 3/4. The hold down positions have a capacity of 4 1/2, 3 3/4, or 3" depending on which bolt pattern the hold downs are affixed to. Base measure a little under 7 3/4 x 6 1/4. Shows signs of age and use. Please review all photos to determine condition and identification. Item is sold as is with No Returns. Will be shipped via UPS Ground.