Product Specification :
- Transparent plastic moulded or Perspex sheet 262 x 20 x 2.7mm to 3 mm.
- Having 2 holes of dia 5 mm at a distance of 50 mm and 120 mm from one end.
- 3 slots x 5 mm width with both ends rounded to semi-circle.
Location of slots :
- 1st slot : 0-25 mm
- 2nd slot : 70-95 mm
- 3rd slot : 140-235 mm
- Marking should be in black colour.