A Porters type sundial in fitted boxwood case with paper card dial and glazed dome cover; a French cylindrical surveyors cross in case; three rules one signed Norton & Gregory ltd London & Glasgow; drawing instruments in case; and a pair of bone cased opera glasses (7)

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A Porters type sundial in fitted boxwood case with paper card dial and glazed dome cover; a French cylindrical surveyors cross in case; three rules one signed Norton & Gregory ltd London & Glasgow; drawing instruments in case; and a pair of bone cased opera glasses (7)

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