Open Cross Staff at Rs 650/piece | Survey Drawing Instruments in Panaji | ID: 19664820388
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Aparna Cross Staff, For Surveying, Packaging Type: Box,Cover at Rs 850/piece in Bengaluru
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File:Cross-staff-MnM 11 NA 5-IMG 5989-white.jpg - Wikimedia Commons
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Cross-Staff - Ages of Exploration
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ION Museum: Cross-staff
1661 Kronan cross-staff (reproduction) - the homepage of Nicolàs de Hilster, PhD
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