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on the back of the base plate indicates that it has been made for the latitude of 280.
The letters and numbers used for inscribing the names etc., on the instrument were closey examined by Pandit Lakshmanbhai and Dr. Malvnia, and found to contain a mixture of Jain, modern Gujarati and other nonJain) types of characters. From the shapes of there characters it was inferred that the instrument is about 150-200 years old.
Acknowledgements
Acknowledgements for the help and guidance I have received from.
1. Dr. Malvania and his team of research workers and scholar), at the L. D. Institute.,
2. Faculty members of the Dept. of Sanskrit, University of Madras. 3. Faculty members of the Oriental Manuscripts Library, Madras., 4. Dr. (Mrs.) L. Varadarajan for help in obtaining relevant references,
5. Prof. B. Arunachalam for help in preparing the manuscripts and diagrams and for technical terminology,
6. Ms. L. Thulasidoss for typing the manuscript. etc.,
7. Mr. R. S. Gollerkeri (Baroda) for help in obtaining relevant references.
REFERENCES
D. ANVILLE, Eclaircissemens geographiques, 1753, Ant. Geog. de l'Inde,
1755. ABDUR-RAHMAN, B. UMAR AS-SUFI, Kitab At Amal Bil Asturlab
(with English translation) published by Dairatul Madrifal Osmania,
Osmania University, Hyderabad. ASIATIC RESEARCHES, XV, 1825. BAPUDEVA SASTRI, The Manmandera Observatory (Pamphlet), 1865. BERNOULLI, J. Des Pater Joseph Tieffenthalers historisch geographische
Beschreibung von Hindustan, 1785. BURGESS J., Indian Antiquary, 1906, XXXV. CHIMANLAL, The Delhi and Banares observatories (Pamphlet) 1912.
