DCN E1101076 ETM HWS PERISCOPE ASSEMBLY COMPONENTS FOR CONTEXT, REFER TO ASSEMBLY D1102049-v1: ALS AND HWS PERISCOPE PLATE ASSEMBLY, USED FOR INTERFACE CONTROL NEW ITEMS - D1101819-V1: HWS ETM PERISCOPE MIRROR MOUNT ASSEMBLY D1101818-V3: HWS ETM PERISCOPE MIRROR MOUNT FIXTURE D1102076-V1: HWS PERISCOPE FIXTURE BASE PLATE D1101860-V1: ALS Y-END LOWER PERISCOPE MIRROR ASSEMBLY D1101859-V1: ALS LOWER PERISCOPE MIRROR RISER