Stanley AL24 User manual

24X AUTOMATIC LEVEL KIT

77-159 • 77-160

INSTRUCTION MANUAL

BEDIENUNGSANLEITUNG

MANUEL D’INSTRUCTIONS

MANUALE DI ISTRUZIONI

MANUAL DE INSTRUCCIONES

INSTRUÇÕES DE UTILIZAÇÃO

GEBRUIKSAANWIJZING

2 • AL24

Fig. 1

Fig. 2

FEATURES (Fig. 1)

1Base Plate 2 Horizontal Circle

3Horizontal Circle Reference Mark 4 Compensator Lock

5Focusing Knobs 6 Optical Peep Sight

7Sunshade / Objective Lens 8 Horizontal Drive Screw

9Leveling Screw 10 Circular Bubble Vial

11 Vial Sighting Prism 12 Eyepiece Cover

13 Eyepiece Focusing Knob

FEATURES

•Wire-hung, magnetically dampened compensator for optimum range and

accuracy.

•Compensator lock protects instrument during transport or storage; the

lock can also be used as a handy compensator checking tool.

•Large effective aperture and minimum focus of 0.3 m.

•Top-mounted optical peep-sight for quick reference.

•Large, easy-to-use precise focusing knob.

•Easy-to-read horizontal circle.

•Penta prism for easy bubble viewing.

•Sealed, dust-protected leveling screws.

•Water resistant, sealed construction plus sunshade for use in various

weather conditions.

•Fine adjustment knobs on left and right sides with friction-braked rotation,

endless horizontal drive.

•1:100 stadia for distance estimation.

•5/8” x 11 threads to fit standard tripods.

AL24 • 3

INTRODUCTION

Thank You for purchasing one of our Automatic Levels.

This instrument was carefully inspected and calibrated within tight

tolerances before shipment. We properly package the instruments for

shipment, but we cannot control how the package is handled during

shipment. We advise that you check the instrument using the test shown in

the “Line-of-Sight” Section before using.

“Measure Twice, Cut Once”...

After doing any job using any instrument, it is advised that you check your

work. To check your work, set up the instrument in a different location from

the place where you originally set up (approx. 16 m) and reshoot a few of

your original targets. The new readings should agree with the first readings.

If the new readings do not agree, you should have the instrument checked

by a STANLEY Authorized Repair Center,or trythe Line-of-sight adjustment.

USING THE INSTRUMENT

Setting up the instrument and centering the bubble

1. Set up the tripod and attach the level using the tripod mounting screw.

2. Adjust the tripod legs until the tripod head is roughly level. Center the

bubble within the vial by turning the leveling screws as shown in Fig. 2.

A – Turn screws A and B to move the bubble to the right side.

B–Turn screw C to center the bubble.

Focusing the instrument

1. Focus the cross hairs (Fig. 3) by pointing the telescope towards a bright

background or holding a white sheet of paper in front of the objective

lens, then turning the eyepiece until the cross hairs aresharp and

black.

4 • AL24

2. Focus the telescope by locating a target, such as a leveling rod, using

the optical peep sight. Looking through the eyepiece, use the focusing

knob to bring the target into sharp focus. Center the vertical hair within

the target using the horizontal drive knobs on either side of the

instrument.

Reading measurements using a leveling rod

Height reading

Read the rod where it is intersected by the horizontal hair. For example, the

height reading in Fig. 4 is 1,195 m.

Distance measurement

Read the rod where it is intersected by the upper and lower stadia hairs; in

Fig. 4 these readings are at 1,352 m and 1,038 m. The stadia ratio is 1:100;

therefore, the distance from the instrument to the rod is: (1,352 – 1,038) x 100

=31,41 m.

Angle measurement

As shown in Fig. 5, sight point A and rotate the horizontal circle until the

reference mark is on “0”. Rotate the level and sight point B; the reference

mark will indicate the angle between A and B.

CALIBRATION

Your AL24 Automatic Level has been factory calibrated; however, you should

occasionally check your level for errors caused by shipment or rough

handling.

Compensator lock button

Check the compensator for proper operation before use or anytime the

operation of the instrument is in question. Push and release the compensator

lock button to shake the compensator. The compensator should return to the

exact horizontal position sighted before the lock button was pressed.

AL24 • 5

Circular bubble vial

Center the vial bubble using the leveling screws, then rotate the instrument

180°. The bubble should remain centered (Fig. 6). If the bubble moves out of

center, the vial needs adjustment (Fig. 7).

Turn the leveling screws to bring the bubble halfway to center (Fig. 8). Using

the Allen wrench, turn the two vial adjustment screws to center the bubble

(Fig. 9).

Repeat the above preocedure until the bubble remains centered when the

level is rotated 180°.

Line-Of-Sight

The line-of-sight needs to be horizontal within 3 mm of level to be accurate.

Set up and level the instrument on a tripod midway between two leveling

rods set approximately 30m to 50m apart. Sight rods A and B; the height

readings area1 and b1 (Fig. 10). The value “H” is equal to (a1 – b1). Move the

instrument to within 6 feet (2m) of rod A and re-level. Again sight rods A and

B; these height readings are a2 and b2 (Fig. 11).

If a1 – b1 = a2 – b2 = H, the line-of-sight is horizontal. If not, the level should

be adjusted as follows.

Because the instrument is set halfway between A and B, any error in the

line-of-sight causes both readings to be erroneous by the same amount.

Error “e” cancels out, so the value a1 – b1 = H is correct. Therefore, a2 – H =

b3, the adjusting value.

To adjust, unscrew the eyepiece cover. Turn the adjusting screw with the

adjusting pin (Fig. 12) until the horizontal cross hair gives the reading b3, on

rod B. Repeat the above procedure until {(a1-b1) – (a2-b2)} </= 3 mm.

6 • AL24

MAINTENANCE

Care must be taken to maintain the accuracy of the instrument.

• After each use, the instrument should be wiped clean and kept in its

carrying case.

• Remove dust from the lenses with a soft brush or a nonabrasive wipe.

Never touch the lenses with your fingers.

• Store the instrument in a dust-free area with low humidity.

• A bag of silica gel dryer is included with each instrument; if it has

stopped working effectively, bake it to remove moisture or replace with

a new bag.

TECHNICAL DATA

AL24 • 7

Telescope Erect

Telescope length 0.8”(202mm)

Magnification 24 x

Leveling accuracy 1,6 mm at 45 m

Working range 300’(90 m)

Clear objective aperture 36mm

Field of view 1°20’

Shortest focusing distance 1’ (0.3m)

Stadia ratio 100

Stadia addition 0

Water resistant? Yes

Compensator:

Working range +/- 15’

Setting accur. +/- 0.8”

Magnet dampening Yes

Sensitivity of bubble 8’/2mm

Circle graduation 1° or 1 gon

Standarddeviation for 1km 2.0mm double-run leveling

Instrument net weight 1.8kg (4 lbs)

Mounting thread 5/8“ x 11 (M16)

WARRANTY

Five Year Warranty ( GW )

Stanley Tools warrants its electronic measuring tools against deficiencies in

materials or workmanship for five year from date of purchase. Deficient

products will be repaired or replaced, at Stanley Tools’ option, if sent

together with proof of purchase to:-

Stanley UK Sales Limited,

Gowerton Road,

Brackmills,

Northampton

NN4 7BW

This Warranty does not cover deficiencies caused by accidental damage,

wear and tear,use other than in accordance with the manufacturer's

instructions or repair or alteration of this product not authorised by Stanley

Tools.

Repair or replacement under this Warranty does not affect the expiry date of

the Warranty. To the extent permitted by law, Stanley Tools shall not be liable

under this Warranty for indirect or consequential loss resulting from

deficiencies in this product. This Warranty may not be varied without the

authorisation of Stanley Tools.

This Warranty does not affect the statutoryrights of consumer purchasers of

this product. This Warranty shall be governed by and construed in

accordance with the laws of England and Stanley Tools and the purchaser

each irrevocably agrees to submit to the exclusive jurisdiction of the courts

of England over any claim or matter arising under or in connection with this

Warranty.

Subject to change without notice

8 • AL24

9 • AL24

Fig. 3

Fig. 4

Fig. 5

Fig. 6 Fig. 7

AL24 • 10

Fig. 8

Fig. 9

Fig. 10 Fig. 11

Fig. 12

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