HCE Rotopol polarizing unit

Bio-Polarizer-1.JPG
Bio-Polarizer-2.JPG
Bio-Polarizer-3.JPG
Bio-Polarizer-4.JPG

Title

HCE Rotopol polarizing unit

Subject

optics

Description

Physical Description
Two polarizing lenses on a hexagonal shaft.  The two lenses are each in a metal ring with a hexagonal handle, and the smaller of the two fits in the larger to make a double-ended (dumbell) object. The smaller of the two lenses has a hexagonal ring with a fixed lens, while the larger has a circular ring with a red knurled rotating ring as well as a filter screw thread adapter.  'HCE' seems to refer to a hard coting terminology.

Functional Description
Used to determine the angle of poraliztion of light.

Creator

Steven A. Walton

Format

physical object

Language

English

Identifier

no serial number

Materials

aluminum, glass, paint
[case] leatherette, brass zipper

Maker

Rotopol USA?

Inscriptions

[large lens ring] HCE SERIES # 5 ROTAPOL USA | SERIES # 5 U.S.A.

Location

MEEM 1105 bio storeroom

Social Bookmarking

Collection

Citation

Steven A. Walton, “HCE Rotopol polarizing unit,” Michigan Tech Inventory of Historic Scientific Instruments, accessed April 13, 2021, https://ihsi.omeka.net/items/show/195.