Description:
- Object ID: ALSA 2008.10.16
- Made by: Hewlett Packard
- Model: 3810 A
- Serial Number: 1648A01630
- Date Made: circa 1975.
- Approximate size: 35 cm (l) (including eye piece and end of lens) X 26 cm (w) and 15 cm (h).
- Accessories: Case: is orange in color trimmed with a silver (in color) metal band and is approximately 47 cm (w) X 46 (d) X 44 cm (h). The top has a few unreadable labels and the bottom has no describable features. The front has two metal clasps and is marked “HEWLETT*PACKARD, Model 3810A, DELICATE UNIT HANDLE WITH CARE”. The back has two metal hinges that are inserted into the metal band around the case. The sides each have a spring loaded folding “D” handle on them. The case also contains: one spare fuse, one set of cables for hooking the EDM to a battery, one eye piece lens cap and foam inserts (in the top and bottom) for holding the EDM and attachments in place.
- 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.
EDM is orange in color with metal scope mount on top; approximate dimensions of EDM are: 35 cm (l) (including eye piece and end of lens) X 26 cm (w) and 15 cm (h).
Front of EDM has black shrouds around both the lens and clear receiver ring (around the lens), a reflective lens cap, a rough sight opening and a front brown insert marked with: “HEWLETT * PACKARD, MODEL 3810 A, MADE IN U.S.A., SERIAL NUMBER, 1648AO1630, Total Station”. There is a small female opening near the top of this brown insert.
The back of the instrument has the adjustable eyepiece (for sighting) and a grey insert that has various grey dials, black switches, a small screen and one orange “MEASURE” button. Also on the grey insert there is a small metallic label that contains information regarding the calibration data for the machine.
The bottom of the EDM has a two pronged receptacle for hooking the power cables, a fuse receptacle (containing a fuse) and two lables (one describing “POWER FUSE” requirements and the other described as “AGB 80” along with a symbol).
A charcoal (in color) tilting yoke is mounted under EDM with three feet for insertion into a tribrach. The yoke consists of a folding metal handle for carrying, a levelling bubble, an adjustable eye piece and mirror (for reading horizontal angles), and various screws for locking and adjusting the various motions..
Source of Object: Donated by Grant Cross, ALS (Ret.)
Notes:
References: Visit article Measurement Technology Progresses – Total Stations for additional information.
Description by: Entered by Ed Titanich, October 23, 2024.