One reply to this is that it is not difficult to determine from time to time the errors of the screws and to apply the necessary corrections to the observations.
The later English artists have somewhat changed the mode of communicating motion to the slides, by attaching the screws pdrmanently to the micrometer head and tapping each micrometer screw into its slide.
Not if it screws up what we're doing... what we should be doing right now, instead of talking about my love life.
There are all kinds of different tools, pitons, hammers to set pitons, ice screws, pound-ins, ice hooks, wired nuts and cams—different stuff for different surfaces.
The eyepiece slides into the tube cd, which screws into the brass ring ef, through two openings in which the oblong frame, containing the micrometer slides, passes.
