Plane Table With Metal Head Description and Specifications for Lab Tenders
Plane Table With Metal Head Use: For drawing site plans and maps and various
engineering recordings during field surveys.
Equipment parts
· Plane table board
· Brass circular disc
· Compete with brass sight vane
· Spirit level
· Plumb bob
· Plumbing fork
· Magnetic compass
· Canvas cover
· Telescopic alidade
· Wooden stand.
Speculations
a) Spirit level
· Meeting BS 3509:1962
Specifies dimensional, constructional and performance requirements for a range of spirit level vials - both cylindrical and circular - and describes a recommended method of testing.
b) Plumb bob
· Brass Plumb Bob with waxed string. Small size - stows easily into Bike Fit Systems Cleat Screw Kit, measuring 1" in length. The Plumb Bob is a standard component of the Bicycle Fitting System.
c) Telescopic alidade
· Telescopic alidade with compass on brass base and foot screws & bubble,
· Compass dia 8.8 cms,
· Telescope's lens 25 mm.
· Magnification 15 X,
Telescope extended: 32 cms, collapsed 23 cms,
d) Prismatic compass
· Complying to ISO 8729:1999.
· Made of Aluminium/brass
· Size 100mm, 125 mm, 150 mm dia.
· Complete in Case with Aluminium Telescopic/Rigid/Wooden Tripod.
· Aluminium circle consist of a needle graduated to 30min (0.5) graduations
· Painted with water proof paints.
Carrying cases are made of Fibre with carrying straps
· with a fitted tripod, Size :board 600mmx750mm
e) Plane table board
High quality fir wood with hard wood battens (meeting at the back fitted with brass screws and washers, meeting BS 4978:1996 nuts for clamping