Mitutoyo Measuring Projector - Checking Magnification Accuracy

2. Installation and Setup
2.4.6 Checking the magnification accuracy
1. Mount the projection lens. (Refer to “2.2.4 Mounting the projection lens”)
2. Place a standard scale (optional accessory, No. 172-116) on the cross-travel stage to
project its image on the screen.
3. Measure the projected image of the standard scale on the screen using a reading scale
(optional accessory, No. 172-161 ).
4. Take measurements at two reference points (100mm, 140mm) in four or more radial
directions along the cross-hair lines on the screen.
5. Calculate the magnification error using the following formula.

∆M =X 100 %
lM
L - lM
∆M
: magnification error
L : measured length of the standard scale
l :
length of the standard scale
M :
magnification of the projection lens
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