U.S. Coast and Geodetic Survey

Type 1 : Traverse Station : Triangle with lines left and right
Type 2 : Reference Mark : Long Vert arrow, short HZ line
Type 3 : Azimuth Mark : Long Vert arrow, short HZ line
Type 4 : Triangulation Station : Triangle with dot
Type 5 : Gravity Station : old type, six sided cap, no center mark
Type 6 : Magnetic Station : six pointed star
Type 7 : Topographic Station : circle
Type 8 : Bench Mark : new type, long HZ line and short Vert line in center
Type 9 : Gravity Station : new type, no center mark
Type 10 : Tidal Bench Mark : circle with HZ line in center
Type 11 : State Survey Mark : smaller cap with HZ line in center
Type 12 : Bench Mark : 3 HZ lines, short Vert line in center
Type ? : Hydrographic Station : circle with dot in center
USCGS Standard Marks

Date: 1948. Type 2 : Reference Mark. CORNELIUS No.2
Date: 1955. Type 2 : Reference Mark. BYHALIA No.1
Date: 1948. Type 3 : Azimuth Mark. PROPST AZ MARK
Date: 1975. Type 3 : Azimuth Mark. LONG BEACH AZ MARK
Date: 1941. Type 4 : Triangulation Station. BEULAH RESET 1953
Date: 1939. Type 5 : Gravity Station. DAYTON HARRIS GRAVITY STA
Date: 1935. Type 6 : Magnetic Station. GREENVILLE MAGNETIC STA
Date: 1963. Type 8 : Bench Mark. B 115
Date: 1917. Type 10 : Tidal Bench Mark, set verticaly. 865 8120 TIDAL 11
Date: 1934. Type 11 : State Survey Mark. CK 25 SCGS
Date: 1934. Type 12 : Bench Mark, set verticaly in building. BENSON
Date: 1932. Type 12 : Bench Mark, set horizontaly. G 40
Date: 1957. Type 12 : Bench Mark, set horizontaly. J 11

National Geodetic Survey

Type A : National Ocean Survey: circle divided by HZ line
Type B : NGS: Vertical Control: circle, HZ line and short Vert line
Type C : NGS: Vertical Control: no circle, HZ line and short Vert line
Type D : NGS: Azimuth Mark: Vertical arrow
Type E : NGS: Reference Mark: HZ arrow
Type F : NGS: Reference Mark: HZ arrow inside circle
Type G : NGS: Horizontal Control Mark: Triangle, dot in center
Type H : NGS: Calibration Baseline: Plus symbol
Type I : NGS: Calibration Baseline: blank center
NOS/NGS Standard Marks

Date: 1982. Type C : Vertical Control Mark. K 222
Date: 1982. Type D : Azimuth Mark. DOUGLAS: AZ MK No.2
Date: 1989. Type D(2) : Azimuth Mark. STATE: AZ MK No.1
Date: 1979. Type E : Reference Mark. M S COLLEGE No3
Date: 1989. Type G : Horizontal Control Mark. WHITE ROSE
Date: 2003. Type G : Horizontal Control Mark. BIG MIKE
Date: 1979. Type SS Rod : Bench Mark. J216