Accession No

3192

Brief Description

American transit (?); surveying compass, W & L.E. Gurley, 1852-3 (c)

Origin

Troy; New York; USA

Maker

W. & L.E. Gurley

Class

surveying

Earliest Date

1852

Latest Date

1853

Inscription Date

Material

metal (brass, silver); glass; wood; hide (leather)

Dimensions

box breadth 345mm; height 310mm; depth 260mm

Special Collection

Provenance

Purchased from Historical Technology Inc., Masssachustts, USA; Catalogue 127, Fall 1984, item 114,1984.

Inscription

‘W. & L.E. Gurley
Troy, N.Y.’

Description Notes

Brass; silvered compass rose with 8 points, 4 cardinal points divided 0-90-0 x 2 by 10 to 30’, knurled screw beneath the compass rose clamps the needle; tapered socket with clamp for attachment to tripod; silvered variation scale outside the compass divided 20-0-20 by 10 to 30’ read by silvered vernier to 1’ adjusted by opposing thumb screws; 2 bubble levels with mutually perpendicular axes.
Inverted V shaped supports. Telescope with conical axis; knurled screw focus moving the objective; eyepiece screw fits to a screw fit tube with sliding ray shade. Cross hairs.
Fitted wooden box with leather strap handle.

References

Events