User guide on taking readings of I-TECH Subsea Bullseyes and Slope Indicators, manufactured in Scotland, UK

1. www.subseabullseye.com
email: sales@icltech.co.uk
tel: +44 (0) 141 332 1331
fax: +44 (0) 141 332 3129
Taking Readings from the I-TECH Subsea Bullseye / Slope Indicator
Reading area The decal is visible through
decal the top of the bullseye
(appearance may differ
depending on the size and
measurement scale)
Ball The ball moves to indicate
the inclination of the surface
Centre point The solid spot identifies the
centre point of the bullseye
Increments The concentriccircles identify
angle measurement
increments, for example this
2° decal is marked from the
centre point at 0.5°, 1.0°,
1.5° and 2°.
Quadrants The decal is divided into four
quadrants. The quadrants
can be aligned and used to
indentify direction.
Two scenarios are illustrated here, the corresponding readings and conclusions are noted below.
Low Point
1 2 1 2
4 3 4 3
High Point
Ball position = centre point Ball position = above the second circular line in
Bullseye reading = 0° quadrant 1
Conclusions = surface is level Bullseye reading = 1°
Conclusions = surface is 1° off the level along the
axis aligned with the ball and the centre point
NOTE: For the purposes of this illustration a 350mm diameter subsea bullseye x 2° measurement scale
has been used nominally. Other bullseye sizes and measurement scales will vary in appearance however
the general principles apply across the range.