| GENERAL CHARACTERISTICS ITEM DESCRIPTION | USED TO MATCH PICTURE AND SOUND TRACK; CONSISTS OF CAST IRON BODY,SHIELD BALL BEARINGS,INDIVIDUALLY CUT ALUMINUM SPROCKETS USED WITH 4 A FRAME WHEELS IN 16MM MOVEABLE FRAME DISC ON FIRST WHEEL FOR COUNTING FRAMES,POINTERS OVER EACH WHEEL SHOW CENTER OF EACH FRAME,POSITIVE BRAKE HOLDS WHEELS IN FIXED POSITION WHEN FILM IS BEING MARKED |