HEATH’S IMPROVED ADJUSTABLE COMPOUND MICROSCOPE. FOR EXAMINING BANK NOTES, MINERALS, FLOWERS, SEEDS, LINEN, ETC., ETC.
Boston: Manufactured by Laban Heath & Co., Patented, December 25, 1877. Two tilting glass lenses housed in a folding nickel-plated brass frame with decorative scrollwork. The microscope when open to its maximum extent is 14.5 by 5 cm wide at the base and 3 cm in height. The lens has..... More