| MM SQUARE : | 35mm dia graticule |
| MESH GRAPH : | 10mm square divided in to 0.5 mm X 0.5mm squares |
| LINEAR SCALE : | 10mm scale in100 parts graduated every 0.1mm. |
| STANDARD CIRCLES : | 13
circles 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0,
1.5, 2.00 and 2.5mm. |
