Garmin 6 Pin Transom Mount Transducer with Depth and Temp. The Garmin Transom Mount Dual Frequency 50/200khz Transducer provides accurate depth and temp readings to your GSD 20/21/22, Garmin Chartplotter/Sounder or Garmin Fishfinder.
Bloodstone is a silicon dioxide and a variety of chalcedony, which is a form of cryptocrystalline quartz. It is a dark green color gemstone with red spots on it. The gemstone is technically a green jasper with presence of iron oxide giving the stone the red spots.
touchstone A criterion or test; a standard or measure. A touchstone is literally a smooth, black, siliceous stone used to test the purity of gold and silver alloys. By rubbing the alloy on the stone and analyzing the color of the streak on the stone, the gold or silver content can be determined.