(15) Rear pivot lock knob - locks rear frame at degree of vertical tilt
selected. When loosened, permits change in degree of vertical tilt.
(16) Camera mount lock - locks camera mount on monorail
loosened, permits change of camera position on monorail bed.
(17) Front side and swing lock knob- locks front frame in position on front
When loosened, permits swinging and/or sliding of front frame on
4x5-inch view camera (front view).