Resolution: 2 degrees

Product shape: round

Size: 55mm dia

For measuring focal points from 0.1 mm to 0.3 mm

Sector: Four 15 ° lead foil sectors, with an included angle of 0.5 ° between each lead line in the sector

Sector (07-550): For easier image interpretation, the template is provided with four 45 ° lead foil mesh sectors.

Sector (07-551): Four 15 ° lead foil mesh sector, the included angle between the lead wires in the sector is 0.25 °

Thickness: 0.03mm thick lead foil