Portable Galvanometer (?)

Title

Portable Galvanometer (?)

Subject

Physics Demonstration

Description

Physical Description:
Object comes in a wooden box. Box has a hinged lid and can be locked. Lock is made of metal with two screws on the face holding it to the side of the box. A leather strap is attached to the side of the box by the lock. There is a parchment tag attached to the leather strap. The strap connects to the box on two opposing sides with each side using two metal screws with washers to hold an end of the strap to the box. There is a brass placard on top of the lid of the box. On one side of the bottom of the box there are two numbers printed. The bottom of the box has four feet.
There is a detachable curved metal piece that has cardboard slotted into one side. The cardboard has numbers written on it with tick marks below certain numbers.
The actual instrument consists of a hinged scope affixed to a metal base. A knob behind the scope rotates a mirror that is positioned below the scope. The scope has a metal circular piece attached to the top. Two metal screws with holes are mounted behind the hinge of the scope. A brass knob is attached to the metal base and contains a water bubble.


Functional Description:
The box serves to protect the scope along with holding the metal measuring card. The knob on the metal base serves as level. The knob on the back of the scope is presumed to rotate a hanging mirror inside the scope. The exact function of the scope is unknown since it appears that it requires power (electrical) to function properly.

Physical Dimensions: Open: 45.5cm x 18.5cm x 10cm Closed: 22.5cm x 12cm x 10cm

Materials: steal, glass, wood, brass, water, leather, cardboard

Inscriptions: Exterior of Box top: G3 | MLMT-8885
Exterior of Box bottom: 2900 41481
Interior: PATENTED | LEEDS & NORTHRUP CO. | PHILADELPHIA | SER. NO. 154126 | MADE IN U.S.A
Knob: LEEDS & NORTHRUP CO. PHILADELPHIA

Creator

Gary Spikberg, Andrew Merdzinski, Andrew Stanley, Nick Lesko

Source

http://waywiser.fas.harvard.edu/objects/14242/portable-galvanometer-with-telescope?ctx=24a8fbe0-083a-41ea-a973-5b23ad2b5882&idx=52

Publisher

MTU Physics Department

Date

1910

Format

Physical Device

Language

English

Type

Physics Demonstration

Identifier

Serial Number: 154126
Exterior of Box top: G3 | MCMT-8885
Exterior of Box bottom: 2900 41481

Physical Dimensions

Open: 45.5cm x 18.5cm x 10cm Closed: 22.5cm x 12cm x 10cm

Materials

steal, glass, wood, brass, water, leather, cardboard

Maker

Leeds & Northrup Company, Pennsylvania

Inscriptions

Exterior of Box top: G3 | MCMT-8885
Exterior of Box bottom: 2900 41481
Interior: PATENTED | LEEDS & NORTHRUP CO. | PHILADELPHIA | SER. NO. 154126 | MADE IN U.S.A
Knob: LEEDS & NORTHRUP CO. PHILADELPHIA

Location

AOB Annex

Files

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Collection

Citation

Gary Spikberg, Andrew Merdzinski, Andrew Stanley, Nick Lesko, “Portable Galvanometer (?),” Michigan Tech Inventory of Historic Scientific Instruments, accessed October 22, 2020, https://ihsi.omeka.net/items/show/178.

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