a clinometer is an instrument which lets you estimate the height of an object (building, tree, flag-...
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A clinometer is an instrument which lets you estimate the height of an object (building, tree, flag-pole) by using the properties of a right angled triangle.
CLINOMETER
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There are many types of clinometer:
From the simple home-made
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To the more elaborate
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To the unusual looking
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Or even this
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However each is used in the same way to measure an angle that will lead to calculating the height of an object.
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To calcuate the height of a tree
Using a suitable instrument measure and record height A and distance B
Use a clinometer to measure the angle at C
Stand a suitable distance from the tree
c
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The procedure is the same for any object
Measure horizontal distance to base of object
Measure vertical height of observer (to eye level)
Measure angle
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x
B
A
c
Draw a Suitable diagram
Height of object is +A
xTanC
Bx B TanC
x
opp
adj
Use this as a scale diagram to find the height of the object
Or use trigonometry
A
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Height of observer (M)
(A)
Horizontal distance to object (M)
(B)
Angle
(C) TanC (BXTanC)
Height of object
+ A
1.55 24 230 0.4245 10.19 11.74
x
x