The trunnions and all the operational machinery are housed within the superstructure of the carina piers. |
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The main frame of this machine is fitted at its base with trunnions, which work in a foundation plate. |
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At the top of the platform, the turntable and trunnions of the gun mount are still there, but the anti-aircraft machine guns are gone. |
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The barrel and breech have been salvaged, so all that remains at the top are a pair of trunnions. |
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As with the machine-gun platform, the turntable and trunnions are intact, but the gun itself is missing. |
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Although the compass carries no maker's marks, it is designed to fit across the transit's trunnions and has a pin that fits a hole on the transit. |
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The introduction of trunnions, the pivots in the middle of the barrel permitting it to move independently of the carriage, was a simple but important development. |
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This last application of the strickle was used to accurately delineate decorative bands on the piece, as well as to locate the position of the trunnions. |
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