Forensic Lab Supply
 Top » Catalog » Physics - Electricity » 3178501 My Account  |  Cart Contents  |  Checkout  


Biology - Owl pellets

Biology - Preserved Specimens


Dialysis Tubing

Dissection Supplies






Laboratory Supplies

Magnifiers and Magnification


Microscopy Supplies

Organics, Stains & Indicators

pH Paper

Physics - Atomic

Physics - Electricity

Physics - Electrostatics

Physics - Energy & Momentum

Physics - Fluids & Hydraulics

Physics - Heat

Physics - Magnetism

Physics - Mechanics

Physics - Optics

Physics - Sound

Prepared Slides

Prepared Slides - Counterstains

Prepared Slides - Historic

Prepared Slides - Pathology

Prepared Slides - Pollen

Prepared Slides Chordata

Property & Evidence

Rubber Bulbs & Specialty Items

Rubber Stoppers

Rubber Tubing - Latex

Specimens Needed


Galvanometer - Triple Range - GS-50

The GS-501 (photo right) is a triple-ramge intstrument with a 500-0-500 micro-ampere direct current movement. Precesion one percent resistors are used to create additional ranges of 100 - 0 - 100 mV and 5-0-5 Volts. These are of course direct current.

This type of instrument is especially suited for use in student work with a Wheatstone bridge. The coarser ranges allow the bridge to be brought into near balance before final adjustment on the most sensitive range. Accuracy is 2% of full range on the microamp range and 3% on the other two ranges.

The center panel is brush-finished, anodized aluminum and the one-piece sides and bottom are painted steel. The meter is a nominal 3-1/2 inch unit with a taut-band movement. Dimension: 12x13x13cm.

Wabash #GS-501 (right side of photo).

Forensics Lab Supply Number 3178501.

Formerly Grau-Hall Corporation dba Grau-Hall Scientific.

Purchase orders may be sent by email to staff @ or by FAX to 916 379 9639 or by mail to P. O. Box 279592, Sacramento, CA 95827-9592.

All products shipped from Wabash, Indiana.

This product was added to our catalog on Friday 20 November, 2009.
Advanced Search
Shopping Cart more
1 x Scalpel Disposable #12 blade
1 x Annelida / Polychaeta: Amphitrite preserved 2-3" each
1 x Mammal: Hamster Ovary Set of 5
1 x Black Rubber Stopper 15mm #00 1-hole. Sold by pound.
1 x Gas Collecting Rubber Bulb 75cc 202-A-
1 x Chordata / Actinopterygii: Fish scale cycloid w.m.
1 x Tracheophyta: Pollen of Aubrieta
1 x Eye Dropper Rubber Bulb 1cc - 200-1B
1 x Tracheophyta: Pollen of Anemone japonica
1 x Lens - Glass - Double Concave 38mm d. 10cm f.l.
1 x Fluorescent Liquids
1 x Rubber Gas Bag w/stopcock One gallon - 204B
1 x Choke and Resonance Coil 110v - ES-2
1 x Mollusca / Gastropoda: Rough-Mantled Nudibranch preserved each
1 x Black Rubber Stopper 20mm #2 1-hole. Sold by pound.
1 x Microscope Slide - Concavity - Single
1 x Spatula, 4" SS blade with wooden handle.
1 x Lens - Glass - Double Concave 38mm d. 15cm f.l.

Contact Us

Manufacturer Info
 More from this manufacturer >>
What's New? more
Annelida / Polychaeta: Arenicola preserved each
Annelida / Polychaeta: Arenicola preserved each