Gurley G-15 Optical Plummet Transit Surveying Instrument w/ Case Nikon TT-700 For Sale

GURLEY G-15 ENGINEER\'S OPTICAL PLUMMET TRANSIT – SURVEYING INSTRUMENT – STORAGE CASE INCLUDED

Condition: Used

Up for sale is a Gurley G-15 Engineer\'s Optical Plummet Transit with storage/carrying case. This is a precision surveying and construction transit featuring a 30X telescope, optical plummet, horizontal and vertical angle measurement, stadia capability, and a rugged all-metal construction.

The Gurley G-15 is a professional surveying instrument manufactured in Japan by World Sokki. The same basic instrument was marketed by Nikon/Schneider as the TT-700, and the World BC-8 is also identified as essentially the same instrument.

• Manufacturer: Gurley Precision Instruments
• Model: G-15
• Instrument Type: Engineer\'s Optical Plummet Transit
• 30X telescope magnification
• Optical plummet with 2X magnification and dual focus
• Stadia ratio: 1:100
• Vertical circle: Direct reading to 1 arc minute
• Horizontal circle: Direct reading to 20 arc seconds
• Dual horizontal verniers
• Built-in/clip-on tubular compass configuration
• Rugged all-metal instrument body
• No batteries required
• Storage/carrying case Precision Instruments, Inc.Instrument TypeEngineer\'s Optical Plummet TransitTelescope Magnification30XMinimum Focus3.94 ftStadia Ratio1:100Telescope Level Vial40\" / 2 mmPlate Level Vial90\" / 2 mmVertical CircleDouble direct reading to 1\'Horizontal CircleDouble direct reading to 20\" with 2 verniersOptical Plummet2X, dual focusCompassClip-on tubular / box typeConstructionAll-metal instrument bodyPowerNo batteries requiredCaseStorage/carrying case included

  The above specifications are published for the Gurley G-15 by Mohave Instrument.

  OPTICAL PLUMMET

  The G-15 incorporates an optical plummet, allowing the surveyor to establish the instrument directly over a point without relying solely on a traditional plumb bob. The published specification identifies a 2X dual-focus optical plummet.

  SURVEYING & CONSTRUCTION APPLICATIONS

  The Gurley G-15 is designed for professional land surveying, construction surveying, engineering layout, building construction, structural layout, steel erection, plumbing, foundation layout, alignment, angle measurement, elevation work, and general construction surveying.

  Its optical plummet makes it particularly useful where accurate instrument setup over a known point is required. Mohave Instrument specifically identifies the G-15 as being well suited for steel erection and plumbing.

  OEM / MANUFACTURER INFORMATION

  Manufacturer: Gurley Precision Instruments, Inc.

  Manufacturer Part / Model Number: G-15

  Gurley CAGE Code: 26612

  NSN: 6675-00-802-9750

  Government/NSN records identify G-15 as a transit with an optical plummet and associate it with Gurley Precision Instruments, Inc. (CAGE 26612).

  CROSS-REFERENCE / RELATED MODELS

  The following references are useful for identifying this instrument:

  • Gurley G-15 – Manufacturer model
  • Nikon / Schneider TT-700 – Same basic instrument marketed under Nikon/Schneider branding
  • World Sokki BC-8 – Essentially the same instrument according to Mohave Instrument

  Mohave Instrument specifically states that the G-15 was manufactured in Japan by World Sokki and that Nikon marketed the same instrument for many years as the TT-700. Its BC-8 page similarly identifies the World BC-8 as essentially the same instrument sold by Gurley as the G-15 and by Schneider/Nikon as the TT-700.

  NSN / GOVERNMENT CROSS-REFERENCE

  NSN 6675-00-802-9750 is identified as a Transit within FSC 6675 – Drafting, Surveying, and Mapping Instruments.

  Historical reference numbers associated with this NSN include:

  • G-15 – Gurley Precision Instruments
  • DT740 – Sokkia / Dietzgen
  • 56-SCT1 – Chicago Steel Tape
  • 7300-17 DT610 – Sokkia
  • BT20A – Sokkia
  • BT30 – Sokkia
  • DT610 – Sokkia
  • DT620 – Sokkia
  • 6140 – Dietzgen
  • 6141 – Dietzgen
  • T22-65BG – Brunson Instrument
  • ECI ET-20C – Orlotronics
  • 740005 – Keuffel & Esser

  Important: These are historical reference numbers associated with the NSN and should not automatically be interpreted as identical current products or direct physical interchange numbers.

  CONDITION

  This is a used Gurley G-15 surveying transit. Please examine all photographs carefully for the actual cosmetic condition, included accessories, case condition, and has not been independently verified unless specifically stated in this listing. No representation is being made that the instrument is currently calibrated to professional surveying tolerances. Buyers requiring certified surveying accuracy should have the instrument inspected and calibrated by a qualified surveying-instrument service provider before relying on it for precision work.

  STORAGE CASE

  A storage/carrying case is included. Please see photographs for the exact case and its condition.

  IDEAL FOR

  This Gurley G-15 may be of interest to land surveyors, civil engineers, construction contractors, survey equipment collectors, engineering firms, steel erection contractors, plumbers, restoration specialists, surveying equipment dealers, educational programs, and collectors of vintage precision surveying instruments.

  SEARCH KEYWORDS

  Gurley G-15, Gurley G15, Gurley transit, Gurley surveying instrument, Gurley survey transit, optical plummet transit, engineer\'s transit, engineers transit, optical transit, surveying transit, construction transit, land surveying instrument, survey instrument, surveyor transit, precision transit, vintage surveying instrument, Nikon TT-700, Nikon TT700, Schneider TT-700, World Sokki, World BC-8, BC-8 transit, optical plummet, construction surveying, engineering surveying, steel erection transit.

  WHAT YOU WILL RECEIVE

  1 × Gurley G-15 Engineer\'s Optical Plummet Transit

  1 × Storage/Carrying Case

  Additional accessories are included only if specifically shown in the photographs.

  Fast shipping.