A very rare Improved Griffith Club microscope, patent date 1886. The base is inscribed "E.H. GRIFFITH, PAT. DEC. 14, 86 / FAIRPOINT, N.Y." with a serial number of 830. Sliding tube coarse focus adjustment and knob fine focus adjustment, with adjustable lamp and two Bausch and Lomb lenses. Original velvet-lined leather case (also marked with the 830 serial number). Invented by Ezra Griffith and for a time produced in association with Bausch and Lomb, known Griffith Club microscope serial numbers range from about 107-1070, with very few examples surviving in good condition.
The case measures 4 x 9.5 x 7 inches. The microscope is adjustable in size, but generally measures about 10.5 x 11 x 7 inches when set up.
Source: Microscope-Antiques
Condition
Some pitting/tarnish, but the microscope is in overall good condition. No glass chimney on the lamp. The box's leather-cover exterior is in poor condition, including a snapped handle.