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| Comprises a short magnetic needle of 20 mm size with agate
bearing and a light aluminium pointer 75 mm long for
precise reading and maximum damping, aluminium dial
graduated in 0-90 in four quadrants, anti-parallax mirror
slot, in a stout metal case of 100 mm diameter. Compass box
mounted on wooden base size 100 x 13.5 cm, fitted with half
meter rule on both sides and with four plastic feet. |
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