Up for sale is this heavy cast bronze quadrant made by Nicson. The dimensions are as follows:

1.125" rudder stock bore

Center of bore to radius of cable guide 6.25"

Width overall 9.75"

1.125" thick

3/16" cable tracks

This is designed for a speed boat, please measure before bidding so you know it will work for your application. If you need any additional measurements please let me know.