Cased George IV Altazimuth Theodolite by Alexander Adie of Edinburgh RB Bate Comprised of an eight-inch brass

Comprised of an eight-inch brass dial with Arabic numeral divisions

and attain greater accuracy

It was my aim to portray that most fascinating of instruments – the barograph – using illustrations as examples of the many different types still available

they are covered with an amalgam of mercury

Cased George IV Altazimuth Theodolite by Alexander Adie of Edinburgh RB Bate Comprised of an eight-inch brassFor sale, a cased George IV altazimuth theodolite by Alexander Adie of Edinburgh. This rare example is comprised of a horizontal five inch divided circle which is coarse adjusted by hand and then finely adjusted by means of a knurled brass knob attached to top. The centre contains an expertly engraved and silvered compass with a small brass cam to the side of the case, to hold or release the movement. Two sides of the outer edge of the base are also