The accessories consist
of five Grunow objectives (2, 1, 1/2, 1/4, and
1/8 inch), two pairs of oculars, analyzer prism
(screws onto the end of an eyepiece), substage
polarizer, camera lucida, achromatic condenser, stage
forceps, live-box, brass bound stage micrometer, and
a free standing bullseye condenser.
This
microscope dates from around 1870. The Grunow
brothers, Julius and William, emigrated from Germany
to New York around 1849. They started in the
scientific instrument business by first working for
the optician Benjamin Pike of that city. By
1854, they began their own operation in New Haven CT
where they concentrated on the production of
microscopes. By 1864, they were back in New York.
Some years later, the partnership ended. J. Grunow
continued on to produce microscopes up to around
1892. The total output of the Grunows was limited in
comparison to some other contemporary firms; on the
basis of the observed serial numbers, they
manufactured just over one thousand microscopes in
total.