Islamic Astrolabe

Islamic Iran, made of brass materials, suspender clamp above, marked with larger signs every 5°, 0-360° degrees, 1° graduated edge, five engraved plates with stereographic projections on both sides, all with inscriptions, hours of worship. Net with 30 named star markers, shadow square for triganometric calculations and inverse of projective material, kallavi Astrolab with diagram of unequal hours 15cm diameter, 20cm length