rheostat switch for sale, brand-new and used.

Melting Point Apparatus Healthcare Lab Science lab Equipment Melting Point Description

*** GET BACK TO WORK or GROWING QUICK with FAST SHIPPING! *** ROUTER VARIABLE SPEED CONTROLLER

This portable set features Welch Allyn's finest diagnostic instruments. The Coaxial Ophthalmoscope (11720) uses a Halogen HPX lamp that provides 30% more light output

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Description, Hand built stir plate for yeast starters and such. Made out of a cigar box for cool factor. Box measures about 6 7/8" x 7 7/8" x 2" deep.

Pro-Physician Deluxe Ear, Nose, and Throat Exam Kit This is a BRAND NEW, Beautiful Otoscope Set with handle, otoscope head, a 2mm speculum, a 3mm speculum and a 4mm speculum and CASE. This is a BRAND NEW, Physician Quality Complete E.N.T. Dia

Really cool old x Ray machine control, built around the early 1920's, maybe before that. A lot of brass and the panel is marble. It's in excellent condition, it's in original unpolished condition.

20 pcs, 6 inches silicon wafers with iconic designs from Dallas Semiconductor

Please Read Carefully following Description before you place a Bid or Buy this item. You are Invited to Buy a Complete 2.5-V Bright & Whitest LED illuminated Veterinary Otoscope Diagnostic Set

This portable set features Welch Allyn's finest diagnostic instruments! The 11720 3.5V Coaxial Ophthalmoscope Head features precision optic with 68 lenses in single-diopter steps (+38 to -30). Halogen lamp illumination insures true tissue color and a Polarizing filter virtually eliminates corneal reflection.

This is a Lincoln Electric Arc Welder model SAE-500 which has been custom built to fit inside a short bed 3/4 ton truck to be used as a pipeline welder (pipeliner). The machine has been removed from its large heavy steel frame and installed in a more compact/lighter aluminum frame. The front, rear, side doors and top (entire case) are also aluminum.

Antique GOLD/METAL ELECTROPLATER/ ELECTROFORMER-1920's/30's A1 ART DECO Bakelite   USES: ~This is a functional antique unit.  It is used to plate or cover any object desired with nickel, copper, silver, or gold, or any other metal.  To plate with gold, the first 3 metals need to be applied first.

This portable set features Welch Allyn's finest diagnostic instruments. The Welch Allyn 3.5v Standard Ophthalmoscope is both versatile and economical. It features halogen light for true tissue color and consistent, long-lasting illumination and 28 focusing lenses.

Listed is a Welch Allyn 74710 Transformer diagnostic set for wall-mount. Excellent (frankly near-new) cosmetic and functional condition. Brand new bulbs in both the 25020 Otoscope head and 11610 Ophtalmoscope head.

You are invited to Buy a Brand New Veterinary Ophthalmoscope/Otoscope Set Bright& Whitest LED illumination The complete set features: Bayonet locking mounts for each instrument head to allow secure connection to the battery

Melting Point Apparatus Healthcare Lab Science lab Equipment Melting Point Description

These rheostat and tap switch knobs are about 1 1/2" in diameter. They all have pointers. They are secured by regular set screws.

These rheostat and tap switch knobs are about 2 1/4" in diameter. Two of them have pointers, the other 4 do not. They are secured by regular set screws.