- Дата: 23-05-2022, 09:21
The same arrangement is used with the pneumatic release and for time exposures i.e. F is partially depressed. Changing the velocity setting alters the position of the fulcrum of the lever L i.e. where L and T meet. The speeds are set by transferring an exterior lever which moves the speed setting rod which adjusts the flow of air to and from the pneumatic cylinder. The shutter speed is ready on the cam at the highest of the digicam, this sets the tension in spring F which tends to turn lever E anti-clockwise. The setting sector is caught by the release lever at its middle notch. When set to T the bottom lever rises, it was held down by the separate T plate, on release the trigger plate can rotate till it meets the end of the middle (B) lever the place it is held till pressure is faraway from the discharge button, it is then held by the bottom (T) lever till the discharge knob is once more pressed. The lever requires two turns to change the slit by 1 mm, because the lever is turned it additionally strikes a pointer around the sting of the pace dial. Around the centre of the arm is a coiled spring the two ends of which are extended to lie each side of a stud on the upper part of the arm.