Description:
- Object ID: ALSA 2008.10.16
- Made by: Hewlett Packard
- Model: 3810A
- Serial Number: 1648A01630
- Date Made: Circa 1975.
- Approximate size: 35 cm (l) X 26 cm (w) and 15 cm (h).
- Accessories: Orange fibre carrying case, spare fuse, set of cables for hooking the EDM to a battery, eye piece lens cap.
- Condition: Good
Commentary:
In 1975 Hewlett Packard in an ad in the Canadian Surveyor headlined the HP 3810A as the “New Total Station.” Horizontal angles could be estimated to five seconds and it was capable of measuring slope distance and zenith angle simultaneously and then calculating the horizontal distance or vertical distance for immediate display. This feature facilitated laying out horizontal distances and elevations. It had a range of 1.6 kilometres using a set of three prisms. Compared to some of its successors it had limitations – there was no internal data storage and the horizontal circle could not be read electronically.
The front of the instrument has “Total Station” marked on it and two labels; one that states “MODEL 3810A HEWLETT PACKARD” and the other “ MADE IN U.S.A., SERIAL NUMBER, 1648AO1630”
Fastened to the EDM is ia a charcoal colored tilting yoke that can be attached to a tribrach that can be attached to a tripod. The yoke consists of a folding metal handle for carrying, a levelling bubble, an adjustable eye piece and mirror (for reading horizontal angles).
Source of Object: Donated by Grant Cross, ALS (Ret.)
Notes: The Society has only one in their collection.
References: Visit article Measurement Technology Progresses – Total Stations and www.dehilster.info: www.dehilster for additional information.
Description by: Ed Titanich, October 23, 2024.