|This is a large Miner's Dial Compass. This instrument has a large compass 13 cm in diameter with 2 viewing arms 27 cm apart. The compass is mounted on a stand with three feet. These feet have levelling screws to set the two horizontal levels, one on either side of the compass. The third level is under the compass just above the stand, to check the vertical level. A cover fits over the top of the compass & the arms fold down for compact storage. The piece the neatly fits into its wooden box. The diameter of the compass is 13 cm, it's 9 cm high from the compass to the base & 21 cm tall with its arms folded open. This is a very impressive looking compass and is selling for an equally impressive price.