17 Opera Glasses, 1950 onwards

7 German Binoculars, from 1910

6 Mother-of-Pearl Opera Glasses, c. 1930

2 American Sherman Tank Telescopes, 1943

2 English Brass Surveying Instruments

English Brass Theodolite by Newton & Co., c. 1880

English Cradle-Type Plain Theodolite by

Brass Theodolite by

10 Surveying Instruments

Group of Surveying Instruments

Theodolite and Further Surveying Instruments

Small German Surveying Level, c. 1880

2 Surveying Instruments, c. 1890

Circle Level by Wéry, c. 1880

2 Surveying Instruments, c. 1900

Surveying Instruments

2 French Leveling Instruments

3 Arm-Protractors

Large Waywiser by Harris, London, c. 1780