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A Sestrel azimuth circle by Henry Browne & Son Ltd. in a fitted hardwood case.
Lot 259
A Watkins exposure 'Bee Meter'.
A Watkins exposure 'Bee Meter'.
A field prismatic compass ex-WD dated 1915 by Edward Koehn, Geneva, original leather case.
An AG2 winnowing machine by Kell Meats & Co Gloucester & Ross.
A Fowler's universal calculator with leather pouch, a slide rule with leather pouch and a boxed field microscope.
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