Embryograph, designed by His, perhaps by Hartnack, French or German, late 19th century
Case for embryograph, designed by His, perhaps by Hartnack, French or German, late 19th century
Frosted glass plaque part of embryograph, designed by His, perhaps by Hartnack, French or German, late 19th century
Eyepiece lens engraved with '0', part of embryograph designed by His, perhaps by Hartnack, French or German, late 19th century
Eyepiece lens engraved with '1', part of embryograph designed by His, perhaps by Hartnack, French or German, late 19th century
Circular metal plate to hold microscopic slide, part of embryograph designed by His, perhaps by Hartnack, French or German, late 19th century
Attachment with lens and prism, part of embryograph designed by His, perhaps by Hartnack, French or German, late 19th century
Microscope slide part of embryograph, designed by His, perhaps by Hartnack, French or German, late 19th century
Embryograph base mounted with circular mirror, designed by His, perhaps by Hartnack, French or German, late 19th century
Attachment with triangular ruler part of Embryograph designed by His, perhaps by Hartnack, French or German, late 19th century
