DCN E1100490-V1

THE CORRESPONDING FORMAL DRAWING TREE, WHICH INCLUDES A PROPER PURCHASING BOM, IS:
LIGO-E1100148-V1

In preparation for extending Hartmann Sensor usage also to the TransMon [AOS] subsystem, 
the spacer plate design has been optimized for an embedded Pt RTD (Omega P/N F3141):

	D1000708-v4 (from -v3)

This effects ASSY D1000657, which is revised to -v3 (from -v2)