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351422001
Mater-reverse Astrolabe; brass; a) rim with letters and hour positions; clockwise scale of degrees 0-360 degrees; Gothic Y type rete with 22 pointers; three plates; b) outermost ring, altitude scales 0-90-0-90-0; band of zodiac signs and degrees; ring of months and days; inner ring of saints' and holy days; equinoxes at 11.5 March and 14 September; pair of shadow scales near centre of disc; alidade with pair of pinnule sights; pin and labels are renewals(scratched 1888?).
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