Ghenea pedestal sight
The Ghenea pedestal sight was a telescope with goniometer invented by the Romanian commander Toma Ghenea in two different
models designed for field howitzers with rigid or spring trail spade, and for
quick-firing field guns. It was tested in January 1908 at the artillery
proving ground of Dadilov (Dobrudja).
A gun, placed on a rough ground, where only the point of the spade could get
in, fired 20 rounds at a range of
The model designed for the quick-firing field guns enabled a quick and sure shift from a range to another, as required by the progressive fire, and the execution of the indirect laying at lateral auxiliary marks, even above wheels and shield. It allowed the gun layer to correct the range also during the relaying of the gun, while this was not possible with ordinary sights. However the manufacture of the mechanism of this sight was judged very complex and delicate.
Ghenea pedestal sight for quick-firing field guns. It was composed by a pedestal H H' V, carrying at the top a telescope. It could be shortened or lengthened, and could rotate 360° around the gun. The pedestal was mounted on a transverse horizontal pivot, attached to the block A, that was joined to the left side of the cradle by means of the support B, and the bolt N, parallel to the gun. The uninterrupted screw M enabled the block A to swing at right angle to the cradle. The air level m indicated the extent of that movement, and compensate the difference of level of the wheels.
The drum of
the angles of sight t was attached
to the pedestal by means of the arm d,
while the elevating drum i, parallel to it, by means of the sleeve h'. Rotating the drum i, the layer could
give the exact elevation up to
Acting on the
bar V, inserted into the bar H', the pedestal could be shortened or
lengthened. The height of line of sight was
The telescope Z was arranged on the arm V so that it could be raised and lowered to keep count of the angle of sight or aim at an auxiliary mark, keeping the arm V vertically. In this way it was possible to lay without changing the position of the sight.
Ghenea pedestal sight for not quick-firing field howitzers. It was composed by a pedestal, carrying at the top a telescope. It could be shortened or lengthened, and could rotate 360° around the gun. The pedestal was mounted on a transverse horizontal pivot, attached to the base of the elevating gear, and through it to the gun. The elevating gear had an air level to compensate the difference of level of the wheels. A goniometer was added for indirect laying.
On the whole it was very similar to the model designed for the quick-firing guns, but was arranged so that it could be removed during the firing, in order to prevent that a precision tool like this was damaged by the shock peculiar of the not quick-firing artillery.
- G. “Alzo Ghenea con goniometro”, Rivista di Artiglieria e Genio, 20/4 (1903), p.448;
- “Hausse a goniomètre
Ghenea pour canons et obusier de campagne” : Supplement à