Mason's Wet and Dry Bulb Thermometer Subcategory_Bases and Rods totaling 250 grams for suspension

totaling 250 grams for suspension from pulleys

this 125mL translucent polyethylene wash bottle features a flexible delivery tube for targeted solvent application

Five-ohm reference coil non-inductively wound from double silk-covered constantan inside a transparent tube

One-ohm metal-film resistance unit at plus-or-minus 1% accuracy with a 0

this small anemometer measures wind speed during earth-science fieldwork and classroom weather investigations

Mason's Wet and Dry Bulb Thermometer Subcategory_Bases and Rods totaling 250 grams for suspensionPaired dry bulb and wet bulb thermometers on this Mason's hygrometer, calculating relative humidity from the temperature difference between the two readings for meteorology coursework.