Centre of Gravity Apparatus

The Centre of Gravity Apparatus is an effective and economical tool designed for the demonstration of the geometric center of gravity in two-dimensional objects.
This apparatus features a PVC rod mounted on a stable base, equipped with a suspension screw at the top.
It includes four clear acrylic laminas, shaped circularly, triangularly, quadratically, and trapezoidally, each containing suspension holes along their peripheries.
When lines are drawn from the suspension points of two or more holes on a lamina, the intersection of these lines indicates the centre of gravity for that particular shape.

Component/Feature	Specification
Size/Scale Diameter	6 inches (150 mm) or 7 inches (175 mm/178 mm)
Vernier Reading	1 minute of arc (30 seconds also common)
Main Scale	0-360° with divisions of (0.5 circ ) (150 mm or 175 mm circle)
Vernier Scale	Double ended vernier separated by (180 circ )
Collimator Lens	Achromatic, 178 mm focus, 32 mm clear aperture
Telescope Lens	Achromatic, 178 mm focus, 32 mm clear aperture
Eyepiece	Ramsden Type ((10 times ) or (15 times ) with cross-line graticule
Slit	Unilaterally adjustable, 6mm long
Fine Adjustment	Provided for both telescope and collimator (laterally and vertically)
Prism Table	Marked with lines; leveling screws & interchangeable clamp
Main Structure	Heavy cast metal with bright plated fittings (sometimes stainless steel scale)
Accessories	Prism holder, Grating holder, Watchmaker’s eyeglass, L-key, Hardwood case

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Shipping: 2-3 Business Days

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