1: An antique polished brass and blackened steel binocular microscope, circa 1890

2: A polished brass kaleidoscope by George Gyori, after the original by William Leigh

3: A cased vintage barograph by F. Darton & Co., London, circa 1900

4: A mahogany mounted Culpepper microscope, early 20th century

5: A brass portable drum sextant by Cary, London, mid 19th century

6: A bronze sextant by Troughton, London, in a fitted mahogany case, circa 1860

7: A Prismatic brass surveyor's compass, by Stanley, London, circa 1900

8: An octagonal brass sundial compass, European, early 18th century

9: A miniature sextant by Abraham, Liverpool, early 19th century

10: A carved Continental wood pocket sundial and compass, dated 1764

11: An antique French brass vineyard setters compass, circa 1890s

12: A limited edition Jovilabe Grand Orrery, made by George Gyori

13: A planetary desk orrery by George Gyori, edition two of six

14: A Jovilabe half-size Grand Orrery, made by George Gyori

15: A brass planetary orrery made by George Gyori, after the original by William Jones (1851-1856)

16: An astrolabe planetary orrery made by George Gyori, after the original by Troughton

17: A limited edition brass orrery, made by George Gyori

18: A compass base brass orrery made by George Gyori, after the original by William Jones (1851-1856)

19: A brass planetary orrery made by George Gyori, after the original by William Jones (1851-1856)

20: A novelty small cased lawn bowl orrery by George Gyori