sales of

Antique Surveying Instruments

Learn More

Instruments for sale

mason-dublin-compass-thumb

Mason Essex Bridge Compass

Sold
wooden-circum-thumb

Wooden Semi-Circumferentor

Sold
houghton-thumb2

Houghton Copy Theodolate

Learn More
ramsden-thumb

Ramsden-Style 4-Vane Theodolite

Learn More

Articles

Restoration of a 17th Century Alta-Azimuth Theodolite

About 12 years ago I was fortunate to obtain a 17th century English theodolite complete with its original, octagonal box and Jacob’s staff adaptor. At the time of acquisition I was not familiar with the names engraved on the arms of the azimuth plate. Once I began to research the names, I realized this was […]

Read More
hone-theodolite