Check out the new Weight Converter. Aneroid, Cistern and Wheel Barometers, Barographs, Thermometers, Hygrometers. Architect rules with interchangeable scales, Yardsticks with royal cipher, ell rules, Micrometers, Thickness measure Instruments. Navigational Octant, Sextant, Azimuth Compass, Marine Chronometer. The original measures are hallmarked Optical Simple and Compound Microscopes, Refracting and Reflecting Telescopes, Lenses, Camera Lucida, Stereoscope, Kaleidoscope, Spectroscopes.
Products are in very good functioning condition.
Pressure Measuring Gas and Air Pressure Gages. Hardness and Elasticity Meters, Hydrometers for Specific Gravity measure of Liquids. Will be soon available.