Perfecscope
Region: United States Period: 1850–1890 / 1890–1930
© Stereoscopy History
The Perfecscope incorporates a modified hood designed to improve shielding from external light. This design was patented under patent no. 548148. The viewer is also equipped with a rotary hinge joint for attaching the handgrip to the stereoscope. This feature was described in an earlier patent from 1883.
Related items: White, Hawley C.Specifications:
Classification:
Hand-held / Single-view / Holmes-Bates
Introduction:
1895
Designer:
Hawley C. White
Maker:
Hawley C. White
Construction:
Wood
System:
Open
Medium:
Paper
Format:
8.5 x 17
Lens:
Convex
Lens focus:
Yes
Inter-ocular adjustment:
No
Patents and registrations:
Number: 281743
Filing: 24-07-1883, Applicant(s): Hawley C. White. via: worldwide.espacenet.com
Number: 548148
Filing: 15-10-1895, Applicant(s): Hawley C. White. via: worldwide.espacenet.com
Published: 14-03-2026 Last modified: 19-03-2026