Brunson 190 Series Optical Micrometer UNIT OF MEASURE:Inches .001" as well as to position

as well as to position a part on the line of sight using the target image

8 mm) spring steel

they turned to one of the strongest structural elements known – a pre-stressed tetrahedron for ultimate stability

Standard topo shoe length

Combined with the stadia calculation of distances from staff readings the NAK2 circle adds the application benefit of detail survey work

Brunson 190 Series Optical Micrometer UNIT OF MEASURE:Inches .001" as well as to positionThe 190 optical micrometer translates the line of sight laterally with an accuracy of 0. 0005 using an optical flat. The cast aluminum housing has a 1. 655 opening to fit the telescope barrel of all Brunson optical tooling transits and levels. Adapters are available which allow this micrometer to be used with a variety of theodolites as well. Any of four machined slots in the housing (located at the 12, 3, 6, and 9 oclock positions) fit over a