Object Details
- Zeiss
- Description
- This rectangular transparent glass ruler has a millimeter scale numbered by tens from 0 to 200. It is marked: Carl Zeiss, (/) Jena. The rule is cracked in the lower left corner. A tan envelope is made from folded paper.
- In 1846 Carl Zeiss established a workshop in Jena, Germany, that became known for microscopes, telescopes, and photographic lenses. The firm sold this rule for making measurements on drawings and photographs for 5 marks at least as early as 1891. By 1902, it was numbered model 134 and described as a 20-cm rule instead of a 200-mm rule. The new price of 7 marks increased to 8 marks in 1906. The Department of Entomology at the National Museum of Natural History used this rule to study its collections.
- References: Carl Zeiss Jena, Microscopes and Microscopic Accessories, 29th ed. (Jena, 1891), 75; 31st ed. (Jena, 1898), 75; 32nd ed. (Jena, 1902), 96; 33rd ed. (Jena, 1906), 79.
- Location
- Currently not on view
- Credit Line
- Transfer from National Museum of Natural History, Department of Entomology
- 1891–1902
- ID Number
- 1990.0099.03
- accession number
- 1990.0099
- catalog number
- 1990.0099.03
- Object Name
- rule
- scale rule
- Physical Description
- glass (overall material)
- Measurements
- overall: .3 cm x 22.3 cm x 3.7 cm; 1/8 in x 8 25/32 in x 1 15/32 in
- place made
- Germany: Thuringia, Jena
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Scale Rules
- National Museum of American History
- Subject
- Mathematics
- Rule, Measuring
- Drawing Instruments
- Record ID
- nmah_904794
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a7-34c9-704b-e053-15f76fa0b4fa
