Optically Worked Double Convex Glass Lens, 75mm Diameter, 1000mm Focal Length Material_Brass the silvery-blue transition metal used

the silvery-blue transition metal used as a hydrocarbon-processing catalyst and in metallurgy student demonstrations

Chrome-plated 60mm reading magnifier extending to a 20cm focal length

holding pH stable at 25 degrees C for calibrating meters and electrodes at the standard low-acid reference point

Used for controlled drop-wise addition of reagents during synthesis

the workhorse decade for introductory Wheatstone-bridge and Ohm's-law work

Optically Worked Double Convex Glass Lens, 75mm Diameter, 1000mm Focal Length Material_Brass the silvery-blue transition metal usedDesigned for parallel beam refraction work, this 75mm double convex glass lens at 1000mm focal length runs at f 13, near collimated for astronomical analogue and long throw projection setups.