The gun is fitted with a trunnion mounted telescopic sight for direct firing up to 3,000m.
The bearings for lower shaft consist of solid bushings fastened into trunnion , and are provided with oil-chamber and capillary felt, making them practically self-oiling and dust-proof.
The receiver is thicker, and it has a reinforced trunnion .
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.
The main frame of this machine is fitted at its base with trunnions , which work in a foundation plate.
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.
The barrel and breech have been salvaged, so all that remains at the top are a pair of trunnions .
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.
As with the machine-gun platform, the turntable and trunnions are intact, but the gun itself is missing.