im replacing parts on a 20 yr old window. pivot bar is: L shaped 3/16 thick, 15/16 long leg 10/16 short leg. long leg has a round piece that sticks out, 3 to 4 16ths.
Also pivot shoe: 3/8 wide 2 1/16 long rotating bushing with rectangular cutout is 3/16 by 5/16. Has 2 teeth at top opposite side of rotating bushing. I could not get my pics to upload. will try again later