Ada Ruber 32 (с поверкой) [29/35] Ruber x32

There is another way to check the compensator.

Make the bubble into the center of circular level.

When you see clear object, hit slightly the tripod legs or the instrument case. Horizontal line should twitch slightly and

back to the previous place.

5.5. RETICULE

1) Set up the instrument between A and B points.

Take readings “a1” and “b1”. (Pic.10)

2) Set up the instrument at 2 m off the point A. Take readings “a2” and “b2” (Pic.11).

Let the telescope be pointing at front staff.

Pic.10

Compute

b2'=a23-(a1-b1)

if b2'=b2, there is no need in adjustment.

If the difference between b2' and b2 is significant, make the adjustment in following order:

Pic.11

MEASUREMENT FOUNDATION

3) Provide an access to the adjusting screws.

Adjusting screw

Clamping screws

Pic.12

4) If the difference between b2' and b2 is positive (negative), horizontal line should be raised (lowed). To raise/low

horizontal line you should screw/unscrew adjusting screw. Determine new difference value b2'-b2 and if necessary,

repeat the adjustment.

Note: to remove “skew” of reticule loosen clamp screw, turn the ocular.

6. THE ACTION OF THE INSTRUMENT

6.1. DETERMINATION OF ELEVATION

1) Set up the instrument between the A and B points (Pic.13)

Note: to check the distance use stadia hair of reticule.

For more accurate measurements set up the instrument close to the center of distance between staffs. It helps you to

avoid errors which result from noncoincidence of axis of sight.

Ruber-X32