Description:
- Object ID: ALSA 2007.27.08
- Made by: Topley Company
- Model: No. 8070
- Serial Number: Unknown
- Date Made: Unknown
- Approximate size: 51 mm diameter
- Accessories: leather case
- Condition: fair
Commentary:
Inscription on the face reads No #8070, Compensated, The Topley Company Ottawa, Canada. “D.L.S. Special. Graduated in inches (pressure) and feet (altitude).
Comes in leather case. R.H. Johnson is written inside the case along with the number “8047” and a crossed out name.
Source of Object: Donated by C.H. Weir, ALS.
Notes: The Society has only one in their collection.
References: Visit articles The Topley Company – a Canadian Supplier of Survey Instruments and The “Vagaries of that Instrument” – The Altimeter for more information.
Description by: Updated by Ed Titanich, September 27, 2024