• Rapidity of setting pairs of 
photographs 
• Speed of plotting at small 
scales 
• Compact: floor space 
required—approx 5 ft X 10 ft 
(1.5 X 3.0 metres) 
• Accomodation for wide angle 
photographs, with formats 
up to 9 in X 9 in (23 cm X 
23 cm) and focal lengths up 
to 12 in (30 cm) 
HILGEK & WATTS LTD 
SURVEYING INSTRUMENTS 
PRECISE LEVEL 
For geodetic, engineering, 
or subsidence levelling to 
the highest order of 
accuracy. 
MICROPTIC 
THEODOLITE No. 1 
Glass circles reading 
directly by optical 
micrometer to 20 seconds 
MICROPTIC LEVEL 
WITH PRISM READER 
Accuracy within 0-005 ft 
at 500 ft. 3-screw base. 
With or without glass cir 
cle graduated to 10 mins. 
Gradient screw optional. 
ALSO EQUIPMENT FOR 
• Base Line Measurement 
• Precise Traversing 
• Plane Tabling 
• River Gauging 
• Geophysical Prospecting and 
• Full range of Surveying Accessories