Babcock cream test bottle brush. Brush part 4-1/2 inches long. Large part 1-1/2 inches in diameter, neck is 1/2 inch in diameter. Total length 11 inches.
Made of black hog bristle twisted into galvanized wire with a radial tufted end.
Forensics Lab Supply Number 3070142.
Formerly Grau-Hall Corporation dba Grau-Hall Scientific.