Quadrant, Two almost identical clinometers to measure the maximum slope of a swinging ship. Both are brass, mounted on a wooden back plate with the center of the bow at the top. The scale on the arc runs from 0 ° to 45 ° each side. The outer edge of the arc is toothed, each side in the opposite direction. The two hands have catches on the back, which engage in the teeth: they can only move outwards along the arch. The catches can be released by hand to bring the hands back to 0 °. A slight interruption of the ratchet edge prevents the hands from falling into each other's eighth of the arc. The

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Size: 7145px × 5831px
Location:
Photo credit: © Gibon Art / Alamy / Afripics
License: Royalty Free
Model Released: No

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