Three Pairs Safety Glasses to "BS 2092.1"
- Made:
- 1963
Three Pairs Safety Glasses to "BS 2092.1", with red filter added to left eye-piece and blue filter to right eye-piece, as used with Williamson-Ross Multiplex Three-Projector Assembly
Details
- Category:
- Civil Engineering
- Object Number:
- 1993-1557
- type:
- eyeglasses
- credit:
- Imperial College of Science & Technology (Dept. of Civil Engineering)
