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RING AND BALL, GRAVESAND'S, Mounted on stand, with ball suspended from adjustable rod (0203)
Similar to RING & BALL but both ball and ring mounted on retort stand through a vertically adjustable collar, with ball suspended above the ring through a chain. Ball diameter 25mm.
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Mounted on stand, with ball suspended from U-shaped bent rod, mounted on cast metal base (0203)
Similar to RING & BALL but both ball and ring mounted on retort stand through a vertically adjustable collar, with ball suspended above the ring through a chain. Ball diameter 25mm.
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BAR AND GAUGE (0204)
For demonstrating expansion of solids by heating and contraction by cooling. Comprising a metal bar mounted on rod with insulated handle, and U-shaped metal gauge also mounted on insulated handle. with GO / NO GO hole. The space between both the arms precisely adjusted to just admit the bar length wise, and the bar cross-section will just pass through the hole. when cold or when both heated to the same extent. On heating the bar, neither its length nor cross-section will be admitted in the gauge at respective points.
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BAR AND GAUGE Barand Gauge, with Barsize 110x10mm (length x diameter) (0204)
For demonstrating expansion of solids by heating and contraction by cooling. Comprising a metal bar mounted on rod with insulated handle, and U-shaped metal gauge also mounted on insulated handle. with GO / NO GO hole. The space between both the arms precisely adjusted to just admit the bar length wise, and the bar cross-section will just pass through the hole. when cold or when both heated to the same extent. On heating the bar, neither its length nor cross-section will be admitted in the gauge at respective points.
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BAR AND GAUGE Barand Gauge, with Barsize 90x10mm (length x diameter) (0204)
For demonstrating expansion of solids by heating and contraction by cooling. Comprising a metal bar mounted on rod with insulated handle, and U-shaped metal gauge also mounted on insulated handle. with GO / NO GO hole. The space between both the arms precisely adjusted to just admit the bar length wise, and the bar cross-section will just pass through the hole. when cold or when both heated to the same extent. On heating the bar, neither its length nor cross-section will be admitted in the gauge at respective points.
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BAR AND GAUGE, SUPERIOR (0205)
Similar to BAR & GAUGE , but with gauge without insulated handle
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BAR BREAKING APPARATUS (0206)
To demonstrating the enormous forces which can be exerted during thermal expansion or contraction and are capable of breaking even the CI bars. Comprising a heavy cast metal frame with U-shaped slotted end pillar to carry a stout iron bar. The iron bar is threaded at one end for a large tensioning knob and has holes at the other end to accommodate the cast iron breaking bars. Supplied complete with ten breaking bars
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BAR BREAKING APPARATUS - BREAKING BARS SPARE (0206)
To demonstrating the enormous forces which can be exerted during thermal expansion or contraction and are capable of breaking even the CI bars. Comprising a heavy cast metal frame with U-shaped slotted end pillar to carry a stout iron bar. The iron bar is threaded at one end for a large tensioning knob and has holes at the other end to accommodate the cast iron breaking bars. Supplied complete with ten breaking bars
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EXPANSION APPARATUS (0207)
Demonstrates the linear expansion of solids. Comprising two cast?metal uprights linked by a pair of parallel plated metal support rods and supporting an expansion bar at the top. The expansion bar is fixed to one upright and rests beneath a friction pointer on the other upright. The pointer moves along a scale reading 0 to 90?. Expansion of the bar on heating causes the pointer to move along the scale. Supplied complete with expansion bars, one each of aluminium, brass and iron.
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LINEAR EXPANSION APPARATUS, SIMPLE (0208)
Demonstrates the linear expansion of solids and allows comparison of expansion rods of different materials. Comprises cast metal end supports mounted at each end of a horizontal metal reservoir, open at the top. that can take any liquid fuel such as alcohol. One of the end supports has a scale with pointer needle on the outside to indicate the expansion in the rod. Expansion rods supported in the holes near top of both the end supports and can be clamped at the end opposite to that of scale pointer. Burning of fuel in the reservoir causes rod at the top to expand. which in turn pushes the pointer needle showing deflection in the scale. Includes three expansion rods, 1 each of brass, copper and aluminium.
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LINEAR EXPANSION APPARATUS, MICROMETER TYPE, ECONOMICAL (0209)
Two cast metal legs joined together by a pair of plated metal rods, with each leg having provision for horizontally supporting the ends of plated brass tube about 50cm long. The tube has a riffled nozzle near each end, facing opposite each other for use as inlet and outlet of steam, and another outlet at the center with holed rubber bung for inserting thermometer to measure the inside temperature. The test rod is inserted in the brass tube supported in rubber bungs at its each end. At one end is fitted a micrometer screw head reading to 0.01 mm. A 4mm terminals provided on each leg for connecting an electric bell or galvanometer to indicate make/break of contacts. Supplied complete with 3 metal test rods, one each of copper, brass and steel.
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LINEAR EXPANSION APPARATUS, GUNTHER (0210)
Comprising two cast metal end pieces joined together by three nickel plated rods and carrying two sliding V-supports for a glass jacket with inlet and outlet tubes. One end piece fitted with spherometer reading 0.01mm, and other with contact screw. The glass jacket encloses both a brass and a copper rod each of about 50cm length, fitted through corks, a half turn of the jacket changing rod in contact with the spherometer. A thermometer can be attached to either of the rods by rubber bands. A binding post is fitted to each end piece for connecting an electric bell or galvanometer to indicate make/break of contacts.
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LINEAR EXPANSION APPARATUS, GUNTHER SPARE GLASS TUBE (0210)
Comprising two cast metal end pieces joined together by three nickel plated rods and carrying two sliding V-supports for a glass jacket with inlet and outlet tubes. One end piece fitted with spherometer reading 0.01mm, and other with contact screw. The glass jacket encloses both a brass and a copper rod each of about 50cm length, fitted through corks, a half turn of the jacket changing rod in contact with the spherometer. A thermometer can be attached to either of the rods by rubber bands.
A binding post is fitted to each end piece for connecting an electric bell or galvanometer to indicate make/break of contacts.
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LINEAR EXPANSION APPARATUS, MICROMETER TYPE (0211)
An improved version of Linear Expansion Apparatus. Comprises of a plated metal tube having a riffled nozzles near each end, facing opposite each other for use as inlet and outlet of steam, and another outlet at the center with holed rubber bung for inserting thermometer to measure the inside temperature. Mounted horizontally on the metal base with the help of brackets with one end having a precision micrometer screw head reading to 0.01 mm and other end having adjusting screw. The metal rod to be investigated is supported in the steam jacket by detachable economical cups situated at each end of the tube. The met a I base painted with scratch-resistant epoxy coating. Supplied complete with one each, copper, brass and aluminium rods but WITHOUT thermometer.
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LINEAR EXPENSION APPARATUS, PRECISION, DIAL TYPE (0212)
The accuracy in determination of coefficient of linear expansion of the material of a rod depends on the precision level of measurement of the expansion produced as a result of rise in its temperature, which is provided by a dial gauge indicator, graduated 0.01 mm per division. Ideal for higher grade students. The apparatus is similar to LINEAR EXPANSION APPRATUS in construction but has a dial gauge indicator instead of micrometer, which can be easily assembled into the apparatus or removed for convenient storage. It requires no electrical terminals or accessories for measurement. The apparatus comes completely assembled and includes four expansion rods, one each of steel, brass, aluminum, and copper.
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