A chart divider of wrought iron in very nice condition, striking due to its length. Catalog: NM.4-20 Date: 1650-1700 L: 191 mm Signed: not signed Condition: perfect for its age, in working condition

Speed reckoner of lime wood designed by Captain McClean and made by C.T. Cooper & Sons. With this reckoner it is easy to convert an observed distance per unit of time in miles, into speed per hour. Rare specimen in excellent condition. Catalog: NM.4-19 Date: 1919 WL: 5,7×64,5 cm (2.2×25.3 in) Signed: Capt. W.N. McClean…

Positions of celestial bodies are indicated by height above the horizon and by azimuth. The direction of a celestial body to be observed can be determined with the help of an azimuth ring. An azimuth ring like this is placed on the compass and is rotated in the direction of the celestial body to be…

Brass ruler with different proportional scales and nautical chart divider in a leather case. All three are in good condition. On the ruler the scales: Meters 1:1000 and 1: 2500. Meters to Pied de Chamb. Vadems of Savoy 1: 2372 Meters 1: 2372 Catalog: NM.4-15 Date: ca. 1800 L: 20 cm (7.9 in) Signed: not…

Eigtheen century brass protractor with hand engraved scales and transversal nonius on the horizontal bar. Catalog: NM.4-12 Date: 1790-1810 HW: 71×113 mm Signed: not signed Origin: France Condition: excellent

A ship-log records the distance travelled through the water. With the time in hours between the observations, it gives the ship’s speed in knots. This is a nice set with clock, line, rotator, sinker weight and towing ring in a pine case with instruction for use in the lid. The log is fixed at the…

Pelorus in a remarkable wooden suit-case with brass handle. The suit-case is made of lime-wood and marked with a crown and number 28. The pelorus has to be slid onto a shoe on the railing to take relative bearings. The instrument is made of brass, the rose appears to be silver-plated. Catalog: NM.1-29 Date: ca.…