This may be a stupid question but,, I have a Fowler digital caliper by Sylvac, model is; Ultra Cal II,I have no info on this thing and my problem is, I dont know how to turn the darn thing off!. After 3 batteries Ive decided to swallow my pride and ask someone. Its powered by battery and remains active no matter what buttons I push. Product details. V-Line's new Closet Vault II has been refitted with superior three-point locking system. The in-the-wall safe that fits between the wall studs (16-inch on center 2 x 4). The Closet Vault II provides a unique and space conscious way to secure firearms and valuables such as laptops, jewelry, and other items with the convenience Using the optic coupling signal connector, this Advanced Systems & Designs FlashCable ® connects the Fowler Sylvac Ultra-Cal, Euro-Cal (such as Mark II, Mark III, Mark IV, Mark V) or Starrett 797 gage and others using optic coupling signal connector to Mitutoyo Digimatic output. See below for list of applicable gages.