A wooden base board with one meter scale divided into mms. with following accessories .:

1 each White face object & receiving screens each 150x100 mm,with aperture, mounted on wooden base with an index mark.

1 Plane mirror 150 x 100 mm mounted as above

1 Lens holder V shaped , wooden.

1 Needle vertically mounted in a short wooden rod, on base.

1 Candle holder on base.

The components have the same optical centre height.