Cased George IV Altazimuth Theodolite by Alexander Adie of Edinburgh RB Bate The lower half of the

The lower half of the dial has a curved thermometer with scale divided for 20-160 degrees of Fahrenheit

the onset of the more agile aneroid barometer put pay to the success of many of these fascinating instruments and they are therefore seldom encountered

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

Pastorelli and Pillischer were just a few of the recognisable names

Cased George IV Altazimuth Theodolite by Alexander Adie of Edinburgh RB Bate The lower half of theFor 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