There are two benchmark disks located at the Parry Sound Lookout Tower. One is stamped "No. 28 Geological Survey Ottawa Canada". That disk is cemented into the rock directly below the first step leading up to the tower. It has been Waymarked as WM2GC_28_Parry_Sound_Lookout_Tower (
visit link)
The second is stamped "Ontario Control Survey 010800412 Natural Resources". It too is cemented into the rock near the steps, but maybe 5 feet from the steps. It is a darker color and maybe a bit less obvious that the No. 28 benchmark.
Neither of the two benchmarks are listed on the Passive Control Networks database (NRCan). This mark however appears in the Ontario COSINE online database as "01019800412":
Station: 01019800412
Also known as: 010800412
Monument status: Existing
Station type: TRAV
Horizontal datum: NAD-1983:ORIG
Horizontal accuracy: Third order
Latitude: N45°20'21.76582"
Longitude: W80°1'39.80729"
Ellipsoidal elevation: 194.xxx
Ellipsoidal elevation order: Unclassified
UTM-17 Easting: E576176.435
UTM-17 Northing: N5021112.022
UTM-17 Cmbd sc-fact: 0.99964094
UTM-17 Mrdnl convg: 0°41'29.7"
MTM-10 Easting: E263441.125
MTM-10 Northing: N5022294.551
MTM-10 Cmbd sc-fact: 0.99989061
MTM-10 Mrdnl convg: -0°22'31.3"
Vertical datum: CGVD-1928:1978
Vertical accuracy: Unclassified
Orthometric elev: 229.xxx
Meridional defl: -0.5"
Prime vert defl: 2.9"
Undulation:
Location: BRASS CAP IN ROCK, FLUSH WITH GRADE. AT GROUND LEVEL OF THE M.N.R. TOWER, ON LOOKOUT HILL, IN THE TOWN OF PARRY SOUND.
25M TOWER REQUIRED TO SIGHT 008690779,008690776,
010800405,010800407,010800408,010800409,
010800410,010800432,010800413,010800414
Other horiz data [ord]: NAD-1927:1974 [3], NAD-1927:1976 [3]
Networks [usage]: 0046 [FREE]
Number of Ref Sketches: 3
Source: (
visit link)