This is an early Wm Johnson compass.
Earlier type Wm Johnson circular logo.
Type: Wing, round leg . Measures 7" in length.
Completely spread point to point measures 8 inches
Made in Newark, New Jersey.
The William Johnson Tool Co. was in business from 1830 to 1938 when it was sold to C.S. Osborne and Co. who continued to use the Johnson name on some products.
several tools don't appear in the photos to the right.
see the tools I use using the Tool Database