Document ID: chunk:federal_register_of_legislation:F2020L01271:reg:2019:p5
Version: federal_register_of_legislation:F2020L01271
Segment Type: reg
Provision Reference: reg 2019 (pt 5/24)
Character Range: 61798–65112

condition

 1901 Henry-Lepaute assembly of Fresnel central lenses and surrounding prisms set in gunmetal frame. A rotating bi-valve assembly.

 Condition intact and sound
 Integrity high
 Significance high
 Maintenance keep in service, clean at normal

 Rectification
 works

 none

Heritage significance: High

 The lens assembly is an original and essential part of a lighthouse associated  with  the  development of marine aids to navigation along the NSW coast (criterion a).

 The lighthouse's Henry-Lapaute lens is the only example within Australia (criterion b; criterion f).

 The lens assembly contributes to the aesthetic
 value of the lighthouse (criterion e).

Description and condition

 1901 Henry-Lepaute mercury-float pedestal, in the form of a large cylinder supporting the mercury trough.

•          Mercury trough – Cast iron circular trough, still
   in service.

•          Mercury float – Cast iron annular float supported by mercury inside the trough. Three screw jacks are attached to the pedestal for lifting the float out of the mercury.

•          Lamp platform – Cast iron platform.

•          Drive mechanism – Electric motor and gearbox. Original clock removed to ground floor.

Condition        intact and sound
Integrity        high
Significance     high
Maintenance      keep in service, prepare and
                 repaint at normal intervals
Rectification    none
works

Heritage significance: High

 The pedestal is an original and essential part of  a lighthouse associated with the development of marine aids to navigation along the NSW coast (criterion a).

 The pedestal's first order mercury float mechanism is only one of six (6) found in Australian lighthouses (criterion b; criterion f).

Description and condition

 1901 stone slab floor, with integral gutter and spitters. Recent built up waterproof membrane. Perpend joints are aligned with the spitters, and are vulnerable to water penetration. These joints were repointed in 2008.

Finish           membrane painted; other visible
                 surfaces are bare stone
Condition        intact and sound
Integrity        medium
Significance     high
                 keep in service, maintain paint coating and monitor for failure of membrane, replace membrane as necessary. Monitor pointing integrity in spitters

Maintenance
Rectification    none
works

Heritage significance: High

 The balcony floor is an original and essential part of a lighthouse associated with the development  of marine aids to navigation along the NSW coast (criterion a).

Description and condition

 1901 Solid stone wall of Bowral trachyte, with sunk panels and engaged piers and moulded coping showing to outside.

•          Finish – Bare stone.

Condition        intact and sound.
                 Re-pointed in 2008
Integrity        high
Significance     high
Maintenance      keep in service; monitor for failure of pointing; repoint as necessary
Rectification    none
works

Heritage significance: High

 The balcony balustrade is an original and essential part of a lighthouse associated with the
 development of marine aids to navigation along the
 NSW coast (criterion a).

 The balcony balustrade contributes to the aesthetic
 value of the lighthouse (criterion e).

Description