The identity of Hawkins is unknown. The instrument has an unusual spiral slide that is used for coarse focus adjustment, an original with Wale, which was exhibited at the International Exposition in Philadelphia in 1876. The claw foot is reversed has has a spread of five and a quarter by seven inches. A stage plate is hinged to a plate on the axis and has a screw spring clamp for a glass stage plate with a slide bar.
Fine focus is achieved with a micrometer screw on the limb.
A curved arm is used to support the body tube and is fastened to the base with a pivot. The substage condenser lies underneath the stage and a double mirror rides on a flat tailpiece. All Rights Reserved . No images, graphics, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders.