19th century mahogany cased surveyors compass by James Parkes & Son, Birmingham

This impressive brass surveying compass was made during the second half of the 19th century by James Parkes & Son of 5 St. It has two foldable sight vanes set above a silvered dial and an English cross bar steel needle that pivots on a gemstone bearing. The dual scale dial spans the full 360 degrees on the stepped outer chapter ring and four 90 degree quadrants on the base.

Both sights are intact and fold flat, with a side lever operated transit lock to hold the needle in place when not in use, and the compass sits in a purpose made mahogany case designed to also store the tripod adaptor in situ with the compass. In very good condition, measuring 80mm in diameter and weighing 160 grams. (290 grams with the case). It's in full working order. Please study the photos as they are part of the description, and I will be happy to answer any questions if I can.

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