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20.3 Staffs
•
Staff types
Name
Material
Length/Front/Reverse Feature
BIS20
Invar
2.0m (6.6ft)
Front: RAB code
ISO 12858-1:
1999 compatible
BIS30
Invar
3.038m (9.8ft)
Front: RAB code
ISO 12858-1:
1999 compatible
For high precision
leveling
BGS40
Glass fiber 4.08m (3 sections)
Front: RAB code
Reverse: graduated
With handle
BGS50
Glass fiber 5.09m (4 sections)
Front
:
RAB code
Reverse: graduated
With handle
BGS50G Glass fiber 5.09m (4 sections)
Front
:
RAB code
Reverse: graduated
With handle
Unit: feet
BAS55
Aluminum
5.0m (5 sections)
Front: RAB code
Reverse: graduated
BRS55
Aluminum
5.0m (5 sections)
Front: RAB code
Reverse: graduated
on reflective surface
Distances can be
measured with Total
Station by using the
reverse side
(reflective sheet).
(Applies only to
instruments that
can measure in
sheet mode.)