Humboldt

Photo of Bituminous Penetrometer Needle
Penetrometer Needle for Bituminous materials. Standard hardened stainless steel needle, 40-45mm exposed needle length. Wt. 2.5g. ASTM D5; AASHTO T49, IP49; ASA Std., A37.1; Fed Spec. SS.R. 406C, Meth. 214.01.
Photo of Swinging Jaw Compressor Clamp
Screw Compressor Clamps are used to control the flow in flexible tubing. The clamps have a machined adjustment screw to permit accurate regulation of the flow. All corners are rounded to prevent cutting of the tubing. The clamps feature brass construction that is plated for corrosion resistance and long life.
Photo of Open Jaw Compressor Clamp
Screw Compressor Clamps are used to control the flow in flexible tubing. The clamps have a machined adjustment screw to permit accurate regulation of the flow. All corners are rounded to prevent cutting of the tubing. The clamps feature brass construction that is plated for corrosion resistance and long life.
Photo of Closed Jaw Compressor Clamp
Screw Compressor Clamps are used to control the flow in flexible tubing. The clamps have a machined adjustment screw to permit accurate regulation of the flow. All corners are rounded to prevent cutting of the tubing. The clamps feature brass construction that is plated for corrosion resistance and long life.
Photo of Adjustable Band Clamps
The Adjustable Band Clamp is designed to hold thermometers, test tubes, probes and other small hardware. The unit consists of a corrosion-resistant, stainless steel clamp that can withstand temperatures in excess of 2300°F (1260°C). Highly versatile, this 1/2" (13mm) single "V" style clamp will accept objects ranging from 0 to 1-1/2" (38mm) in diameter. To withstand twisting and bending, the band is constructed from 100,000-PSI tensile strength steel.
Photo of Ball Joint Clamps
Designed for use with spherical ball/socket glass joints, especially where frequent disassembly is not required. The clamps consist of two separate flat horseshoe-shaped sections with machine bolts and nuts. Clamp portions are constructed from stainless steel.
Photo of Steel Cork Borers
These inexpensive steel sets are used to bore holes in corks and rubber stoppers. They consist of plated tubing with precision ground cutting edges. The smooth plastic handles are stamped with a number designation, which corresponds to the table below. A punch is included with each set.
Photo of Brass Cork Borers
These inexpensive brass sets are used to bore holes in corks and rubber stoppers. They consist of plated tubing with precision ground cutting edges. The smooth plastic handles are stamped with a number designation, which corresponds to the table below. A punch is included with each set.
Photo of Support Rings with Clamp
Cast iron support rings with clamp. Use on support rods up to ½" diameter. Center distance from each ring to support rod is 4½".
Photo of Extension Support Rings
Cast iron extension support rings without clamp. Allows range of horizontal adjustment.
Photo of Ring Stand with Tripod Base
Bases are cast iron with black enamel finish. Rods are zinc plated steel and threaded to fit into the base.
Photo of Stamped Steel Ring Stand with Rectangular Base
Base is stamped steel with a black enamel finish. Supplied with plated steel rod.
Photo of Ring Stand with Rectangular Base
Bases are black enameled iron with a rectangular shape. Rods are zinc plated steel and threaded to fit into the base.
Photo of THERMCO ASTM Thermometers

These ASTM mercury in glass thermometers are made in accordance with specifications of the American Society for Testing and Material. Strict manufacturing procedures and quality controls insure full compliance to ASTM E-1. These instruments are made from annealed glass and have been extensively aged for minimal scale error and stability. Many crossover to the IP standard listed alongside the ASTM number.

Photo of Crucible Tongs
Crucible Tongs with riveted joint. 3/16" (5 mm) diameter and 9" (229 mm) long.
Photo of Concentric Ring Tripods
Black enameled tripod with cast-iron concentric rings and detachable 9" (229mm) long legs for easy storage.
Photo of Single Ring Tripods
Single Ring Tripods have black enameled, cast-iron rings with detachable 9" (229mm) long legs for easy storage.
Photo of Nichrome Wire Triangles
Round nichrome wire triangles, 14 gauge.
Photo of Triangles with Flanged Clay Stems
Iron wire triangles, 16 gauge galvanized with flanged clay pipe stems.
Photo of Triangles with Plain Clay Stems
Iron wire triangles, 16 gauge galvanized with plain clay pipe stems.