Hi Gang,
Well I just had to take out the 201 and 15-88 and see the difference. Here are some pictures to prove that yes, the 201 is quite a bit bigger. This surprised me.
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The 201 is on top and the 15-88 is below. Note the size of the bases is the same, but the side slide plates are different. The 201 is way shorter as the head is closer to the edge of the base.
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Above is the 201, measuring in at approx. 20cm from pillar to below the needle.
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Above is the 15-88, measuring in at approx. 17 cm from pillar to below the needle.
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Above is one more pic of the 201 on top and the 15-88 below, you can see how much longer the 201 is from this view too.