Wild Heerbrugg Tubular Compass With Split Image Reading, Hard To Find !

US $3100

Gais, Switzerland
Jun 18th

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for sale is this nice: WILD HEERBRUGG Wild Tubular Compass attachment originaly for the Wild T1, Wild T1-A or Wild T16, but can also used on other instruments if they are not magnetic. all included what you see one the picture, not included are the variouse adapters for the different instruments new old stock ... never used, but some paint chips from handling The Tubular Compass, which is attached to the right standard, is used for the initial orientation of the zero pointing, or of any R. 0. reading of the horizontal circle, to the Magnetic North. Text from the latest Wild / Leica T1 user manual: 4.4.1 Tubular Compass With theodolite in Face left, the compass is fitted to the left standard with its evepiece towards the observer. It is screwed to the mounting guide plate used for the carrying handle. lf the handle is not attached place compass on top of mounting guide plate and screw it to it using the bottom two holes in the compass flange. If the handle is attached, place compass against the side of the mounting guide plate and screw it to it using the upper two holes in compass. The compass eyepiece turns for focussing. The needle release button is on top of the compass. Using the T1 with Tubular Compass: If the T1 is equipped with tubular compass, zero reading of the horizontal circle can be set to magnetic noith. Set horizontal circle to zero. Keep upper plate clamp (7) tightened, slacken lower plate clamp (25), press down compass needle release button and turn alidade by hand until the two upturned ends of the compass needle are almost in coincidence. Now tighten lower plate clamp (25) and bring ends of compass needle into exact coincidence by tuming lower plate drive (3). Always bring the needle ends into coincidence from the same directionw hich is achieved by always making the last half turn of the drive clockwise. This improves accuracy as the pivot friction will always act in the same direction. Zero reading and telescope are now oriented to magnetic north. The lower plate clamp and drive (25, 3) are not touched again and all subsequent sightings are made with the upper plate clamp and drive (7, 23). lf this procedure is carried out subsequent horizontal circle readings will be magnetic bearings. Additional the buyer will get the technical manual the parts manual the user manual or the brochure of your wanted Wild instrument ! as a pdf file for a value of $20 (everybody else can order them over my webpage ... see below) Wild Heerbrugg AG (now Leica Geosystems) everything is fully functional Check also my other auctions ... including a original Wild Heerbrugg T4 user manual ... sorry its in German a Original US Army Wild T4 Operator, Organizational, Direct and General Support, and Depot Maintenance Manual Wild T16 theodolite Wild target kit Wild illumination kit Wild prismatic set ... >>>>>>>>>>>View seller's other items <<<<<<<<<<<< Interested collectors will find an enormous amount of information about the use and the construction details of these instruments. A great find for all serious collectors of technical measurement instruments ! Further informations about the history of Kern & Co, Aarau and Wild Heerbrugg AG can be found on my private webpage (virtual Archive of Wild Heerbrugg). The link will you find on the "about me" page or search with google for Wild-Heerbrugg.com Payment by paypal or international bank transfer.