800 DIA. CHAMBER, 1 IN. 315, ZERO LEVEL, VARIED ANGLES (EVERY 15°): 800 DIA. CHAMBER, H.1300, 1 IN. 315, ANGLE 15, ZERO LEVEL, WITH STEPS
800 DIA. CHAMBER, H.1550, 1 IN. 315, ANGLE 15, ZERO LEVEL, WITH STEPS
800 DIA. CHAMBER, H.1800, 1 IN. 315, ANGLE 15, ZERO LEVEL, WITH STEPS
800 DIA. CHAMBER, H.2050, 1 IN. 315, ANGLE 15, ZERO LEVEL, WITH STEPS
800 DIA. CHAMBER, H.2300, 1 IN. 315, ANGLE 15, ZERO LEVEL, WITH STEPS
800 DIA. CHAMBER, H.2550, 1 IN. 315, ANGLE 15, ZERO LEVEL, WITH STEPS