One of three single surface models in yellow wire

Made:
1967 in Welwyn

One of three single surface models in yellow wire showing a Cross Cap, 1967.

Details

Category:
Mathematics
Object Number:
1967-479/1
Materials:
metal (unknown) and paint
Measurements:
overall: 190 mm 220 mm, 0.13 kg
type:
single surface model (wire)
credit:
Oakes, F.