19th Century Antique Theodolite Burnished Brass Signed Pietro Sbisà OMS Florence

Wooden and brass polarimeter with cast iron tripod base from the late 1800s. It is an instrument used to determine the concentration of sucrose and glucose in raw materials and sugar...

Brass sextant signed Imray & Son 89 & 102 Minories London, datable to around mid-19th century, instrument housed in its original mahogany box shaped like the instrument with hinges, ...

Magnetic topographic compass, of oak and brass; instrument consisting of a magnetized needle free to rotate on a horizontal plane, marking with the tip of the needle the direction of magnetic north, compass card with eight winds complete with goniometric circle divided into 360 °, complete with the compass needle lock. Italian manufacture of the late 19th century. Very good condition. Measure 3.1x3.1 height 1. Shipping is insured by Lloyd's London; our gift box is free (look at the last picture). The invention of the compass is mysterious but it is well known that magnetite was discovered in Magnesia, a city of Asia Minor. We can find the first indications about the use in Europe of the magnetic force for orientation at the end of the XII century...

Brass sextant signed B. Cooke & Son Hull, from the second half of the 19th century and housed in its original mahogany wood box with brass handle, hinges, and locking hooks, complete...

Pair of antique brass scales standing on a mahogany base. A brass centre column having a shaped arm to the left holding a removable brass bowl. Th...

An antique French intricate brass balance with different weights in solid brass, in good condition. The iron scale is topped with the original polished brass plates. The scale reads ...

An early 19th century mahogany marine barometer of exceptional quality and originality. The elegant carved, fluted and turned case has an inset engrav...

A 19th century 4-column hourglass made entirely of pewter. Height 17.5 cm, base 10 x 10 cm.