uun 
COUNTRY 
USA 
TYPE OF MARK 
DISK 
STATION / 
LAYS 1961 (HIRAN) (AMS) 
LOCALITY 
Laysan Is., Hawaii 
STAMPING ON MARK 
LAYS - 1961 ^ 
AGENCY (CAST IN MARK) 
USC&GS 
I ELEVATION 
Approx. 25 
LATITUDE 
N. 25° 46’ 25.55" 
LONGITUDE / 
•w. 171° 44’ 27.91" 
DATUM AMS * 1 ORDER 
If 
Astronomic Position 1 
NORTHING 
EASTING 
... , 
GRID AND ZONE 7 DATUM 
... 
NORTHING 
EASTING 
GRID AND ZONE ^ ESTABLISHED BY-AGENCY-DATE 
I 
TO OBTAIN 
GRID AZIMUTH. ADD 
TO THE GEODETIC AZIMUTH 
OBJECT 
(GRID) (GEODETIC) AZIMUTH 
BACK AZIMUTH 
GEOD. DISTANCE (M) (FT.) 
GRID DISTANCE (M) (FT.) 
✓ 
Astronomic Position of LAYS RM 2: Lat. N. 25° 46 T "24.89”, Long. W. 171° 
44* 27 . 99 " ( Astronomic Azimuth LAYS RM 2 to AZ MK 211° 29 1 57.98 uX from south. 
The station is marked by a USC&GS triangulation disc stamped n LAYS-1961 n , 
set in a 12 inch square concrete monument which surrounds a 5 foot length of 
2 inch galvanized pipe driven in the ground (height above ground not noted). 
Located on highest point of ridge between the middle lagoon and the beach on 
the western side of Laysan Island approximately 200 feet east of Sand Beach, 
—which is the terminus of the best boat approach and landing site on the island^ 
- in a clear, level, sand-guano covered area approximately 125'feet northeast of 
—a conspicuous and only ironwood tree on the island. ' 
O' 
RM 1 is marked by a 5 foot length of 3 inch angle iron driven in the ground 
surrounded by a mound of concrete which projects 24 inches above the ground, 
approximately 30 feet in astronomic azimuth from south of 212° 14 T 12” from the 
station. 
RM 2 is a USC&GS reference disc stamped LAYS-RM: 2- 1961 set in a 16 inch 
square concrete monument• which projects 4.5 feet above the ground, 20.58“meters 
in astronomic azimuth from south of 05° 46 T 03 n<# from station. (RM 2 was occ¬ 
upied as the light crossing station for azimuth observations). 
AZ. MK. is marked by an unstamped USC&GS triangulation disc cemented in 
top of a 5 foot length of galvanized pipe driven in the ground and projecting 
2 feet above the ground on the high sand dune at edge of vegetation on northern 
end of island in astronomic azimuth from south of 211° 29* 57.98"*'from RM 2 
LAYSAN MAGNETIC is marked by a USC&GS BM disc cemented in top of a 3 inch 
copper pipe which projects 2 feet above ground (stamping not noted), 83.92 ^ 
meters in astronomic azimuth from south of 248° 35* 02 n ^from RM 2/ This is the 
only 1930 survey station recovered and is in good condition. *" 
I 
PORM 4 4 0 1.] 
II AOQ I» "9 V ■ 0 
POSITION AND DESCRIPTION OF SURVEY STATION 
REPLACES AMS FORM 3-264, 7 SEP 54, WHICH MAY BE USED UNTIL EXHAUSTED. 
