অনুসন্ধান করুন
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a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration
অ্যাপ ডাউনলোড করুন
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অনুসন্ধান করুন
a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration