AstroMedia Hands-on Science Series Інструкція з будівництва - Сторінка 10

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G. The Top Cover and Visor

To make the image on the tracing paper easier to see, the top

of the Camera Obscura can be shaded by a visor. The top cov-

er acts as the front of the visor. The side visor parts have foot

rests that can be slid into brackets at different heights.

Step 28

Fold the glue tab on the top cover [G1, sheet

6] forwards and then glue this tab to the marked

spot located at the top of the front edge strip. Make

sure that the cover sits in the middle of the housing

and is flush with the edges of the housing when it is

closed.

Step 29

Fold the glue tab on the right side of the vi-

sor [G2, sheet 7] backwards and glue the grey sur-

face of the foot rest 1 [G3, sheet 7] to the marked

spot on the black back of the side part of the visor

(Fig. 5). The foot rest should be flush with one edge

of the visor side part and on the other side the gold

printed semicircular end protrudes beyond the

edge. Then glue the right visor part with its tab onto

the right hand edge of the top cover. At the rear it

should be flush with the end of the top cover. At the

front it just reaches the bend of the cover's hinge.

Fig. 5: Visor side part with foot rest

Step 30

Glue foot rest 2 [G5, sheet 7] to the left side

of the visor [G4, sheet 7] in the same way and then

glue it to the left edge of the top cover.

Step 31

If you now open and close the lid, you will see

that the foot rests on the sides of the visor fit into

the cut-outs in the edging strips. To enable them

to latch in those positions, brackets are glued over

the cutouts. Glue the 4 foot rest brackets 1 to 4 [G6

to G9, sheet 5] over the cut-outs in the front and

the top edging strips so that they are flush with the

edges of the edging strips. This creates pockets in

which the foot rests can be inserted and the lid can

be secured either closed or open at right angles.

Step 32

To enable the top cover to be secured in a

60° position, two further brackets are provided for

the foot rests. They are glued at an angle onto the

side walls. Glue the four bracket feet [G10+11 and

G13+14, sheet 3 and 4] under the ends of the foot

rest brackets [G12 and G15, sheet 7] and then glue

these onto the angled glue markings on the right

and left side wall. Before the glue sets, check that

the foot rests of the visor fit neatly into place.

Congratulations!

Your camera obscura is now complete. Place a sheet of trac-

ing paper on the viewing screen and it's ready to use.