Might be of interest to some - he has 4 of them.
And a question - Are these meant for typical height of instrument applications, or could it be used over longer distances, say up to a ceiling, or down a shaft? The Leica website I found doesn't list an accuracy over distance ratio
These are meant for "height of instrument" applications.
The nadir and zenith plummets for floor to floor etc; are optical and a fair bit more expensive generally.
on another topic - noticed this in "other items". I have seen these before and not quite sure what they are used for?
The autocollimation eyepieces have some specific industrial applications which I do not know enough about to adequately describe - other than to say that if you look at a reflective surface you can see your own crosshairs.
In surveying applications they allow you to illuminate the reticle for astro work or work in dark environments.
The specification for the height of the beam is given only to 1.5 meters. This is the spec's from the manual for the laser SNL121 Laser Plummet...
When you point that to a optically flat front-surface mirror and get your crosshairs to coincide with the image of the return of your crosshairs, you are EXACTLY 90 degrees perpendicular to the mirror. When the front surface mirror has magnets on the back side that are parallel to the mirror's front surface, then the doo-hickey that the mirror is attached to is EXACTLY 90 degrees perpendicular to the instrument's line of sight. Used for Optical Tooling applications in machine shops, aerospace fabrication such as aircraft wings, ship propellor shaft alignments, printing press roller alignment operations, etc.
Colin Frank, post: 301640, member: 7027 wrote:
Might be of interest to some - he has 4 of them.
And a question - Are these meant for typical height of instrument applications, or could it be used over longer distances, say up to a ceiling, or down a shaft? The Leica website I found doesn't list an accuracy over distance ratio
http://culaciati.cl/folleto/PLOMADA%20NL.pdf
SNL121 Laser Plummet
http://www.karaco.com/content/PDF/SNLL121_UM_en.pdf
Permitted uses The permitted uses of the laser plummet are the following:
Û¢ Centering the tripod above ground points
Û¢ General purpose plumbings
Û¢ Adjustment of reflectors and sensors
Folks still using the Autocollimation Eyepiece for optical tooling are wasting their, and their clients', time. Their are plenty of case studies on improvements in industrial metrology over the last 10 years.