# 0.50 1.025 2.051 0.50 1.00 0.50 girdle Shutter body.

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0.50 1.025 2.051 0.50 1.00 0.50 girdle Shutter body

3.10 3.61 0.065 3.37 0.18 0.20 0.062 3.11 1.00 0.50 girdle (new In 2002) bottom lip (new in 2002) shutter 0.12 0.125 interference is about 0.015 0.12? 3.37+2 * 0.12 = 3.61 vs 3.625 OD = 3.75 0.06

0.50 (photo) 3.10 3.61 0.065 3.37 0.18 0.16-0.18 (photo / difference) Need to check this) 0.06 (photo + difference) 3.11 1.00 (photo) girdle (new In 2002) bottom lip (new in 2002) shutter 0.12 0.125 (guess / photo) 0.128 (difference) OD = 3.75 0.06 (difference) 3.625 3.051 ID = 3.63 3.37+2*0.12 = 3.61 vs ID=3.63. So nominal clearance between button and shutter is 0.010”. Dimensions Blue: directly from E-MIT-46 + E-MIT052 green: inferred from difference and/or photo red: uncertain. Need to verify with more photos clearance = 0.13 (difference) 0.10 – 0.12 (photo) snout for L1 lens holder sticks out maybe 0.12-0.14  interference Proposal: position shutter off-center with respect to turret (using Vespel bushing) to provide additional clearance at L1 ‘snout’

turret Vespel SP-3 “L”-bushing shutter girdle L-1 lens to plasma ‘elbow’ Is there value in adding a vertical ‘lip’ to ensure that shutter can’t be pulled away from the turret?

turret Vespel SP-3 “L”-bushing shutter girdle L-1 lens to plasma ‘elbow’

Vespel bushing T-clip Shutter body (left half) Shutter body (right half) Vespel bushing turret Offset joint at two halves of shutter From joint of Vespel bushings