Manufactured from heavy-duty ribbed aluminium alloy box section.
Fitted with three factory set acrylic block vials, 2 vertical and one horizontal, guaranteed against leakage and breakage for 5 years.
Fitted with shock absorbing end caps.
Ground on top and bottom working faces.
Size 600mm (24 in).
Accuracy in normal working position is 0.5 mm /m and in the reverse position 0.7 mm /m.