1st May, 2000 12:00
Instruments of Science and Technology
47
An English Range Finder Cotton Type MKII.
An English Range Finder Cotton Type MKII.
London, England, circa 1940.
By E.R. Watts & Son Ltd. , LONDON No. 2634.
Prismatic range-finder Cotton Type MK II. Naval Rangefinder with a vertical turned wooden handle, and an arrangement of optical lenses. Three reversible brass inserts calibrated on both sides in yards, correspond to various base heights, (20 and 25 feet, 30 and 35 feet and 40 and 50 feet). They are fitted along the axis of the instrument. When the scale for the appropriate base height is selected and inserted, the carriage can be slid for coincidence and the distance read at the index mark on the sliding carriage.
Measurement: L. 26 cm.
Estimate: 40-60
Sold for €65
An English Range Finder Cotton Type MKII.
London, England, circa 1940.
By E.R. Watts & Son Ltd. , LONDON No. 2634.
Prismatic range-finder Cotton Type MK II. Naval Rangefinder with a vertical turned wooden handle, and an arrangement of optical lenses. Three reversible brass inserts calibrated on both sides in yards, correspond to various base heights, (20 and 25 feet, 30 and 35 feet and 40 and 50 feet). They are fitted along the axis of the instrument. When the scale for the appropriate base height is selected and inserted, the carriage can be slid for coincidence and the distance read at the index mark on the sliding carriage.
Measurement: L. 26 cm.
Estimate: 40-60
Auction: Instruments of Science and Technology, 1st May, 2000
Hessink's proudly presents the sale of a fine single owner collection of Instruments of Science and Technology. The sale offers you a great opportunity to purchase beautiful selection of globes, microscopes, telescopes, medical, drawing, surveying and navigational instruments from famous instrument makersfrom the 17th to the 20th century.
