Perfect for establishing straight lines and planes
Patented ball bearing mounts permit accurate sweeping of both horizontal and vertical planes. The 771-H190 employs a 194-TM coincidence level for precision leveling. The 194-TM has a 360-degree rotating turret to view the magnified bubble image from any position.
The 771-H190 also has a hollow vertical axis that allows you to look straight down through the instrument base to see targets or collimators which are directly below the instrument.
Available with English, metric, or no micrometer. Measurements from the optical reference line (the line of sight) are taken by using an optical micrometer mounted on the telescope. The 771-H may be ordered with an English-unit micrometer, a metric-unit micrometer, or no micrometer (see table below).
Additional general information about this instrument is available by reading about our transits.
May Be Used With
160-x Series Coordinate Micrometers
186 Plastic Autoreflection Target
188 Glass Autoreflection Target
190-x Series Optical Micrometers
191 Combination Reticle Projection, Fixed Right Angle Eyepiece Unit (discontinued)
192 Auto-Collimation Unit (discontinued)
193 Right Angle Eyepiece (discontinued)
193-L Right Angle Swivel Eyepiece, Illuminated Adapter
196-1 Combination Projection, Auto-Collimation, Fixed Right Angle Eyepiece Unit
|Bearings||Ball type with a runout of 0.000025″ or less|
|Field of View||1 degree|
|Finish||Grey Textured Polyurethane|
|Main Telescope Effective Aperture||1.34″|
|Main Telescope Focusing Range||2″ to infinity|
|Main Telescope Image||Erect|
|Main Telescope Length||14″|
|Main Telescope Magnification||20X at 2″ from objective; 30X at infinity|
|Main Telescope Optics||Low reflective, protective coating|
|Main Telescope Reticle||Glass, filar/bi-filar pattern (other patterns available)|
|Weight, Product (Approx.) lb||31|
|Weight, Product (Approx.) kg||14.1|
|Weight, Product & Case (Approx.) lb||62|
|Weight, Product & Case (Approx.) kg||28.2|
|Weight, Shipping (Approx.) lb||63|
|Weight, Shipping (Approx.) kg||28.6|