Scherr Tumico  Mechanical Depth Micrometer Set 0-8" US Govt & Wooden factory Case.  Operates as designed.  Adjustments are smooth and accurate. Includes 4,5,6,7, & 8" extensions.  Previous owners marks "TMV 0009"  etched on one side and "GMC #16' on the  other.  Wood case  has a Scherr Tumico foil sticker and has owner marks in paint pen "Depth Mics" in 6 places.  Please see phots for more details and to evaluate cosmetic condition for yourself