Calculators/Aides

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There are 19 products.Calculators/Aides 

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Showing 1 - 15 of 19 items
  • Danfoss

    USED, acquired from school surplus, some numbers may be difficult to read due to worn out spots on transparent plastic slider.Listing is for one (1) each refrigerant slide, Danfoss, for R12 R22 R502 R717 calculations, comes exactly as shown in the photo.

    $12.49
    12 in stock
  • Carrier Corp.

    POSSIBLY USED, acquired through school surplus, subcooling/superheat slide-chart for R-22 only, product markings: subcooling calculator (cooling, TXV), proper airflow range (cooling), required superheat calculator (cooling, non-TXV), slide-chart looks to be in excellent condition.

    $3.79
    Out of stock
    $3.79
    Add to cart
  • Carrier Corp.

    USED, acquired through school surplus, superheat/subcooling slide-chart, for R-410A only, product markings: subcooling calculator (cooling, TXV), proper airflow range (cooling), required superheat calculator (cooling, non-TXV), slide-chart has a few wrinkled spots, otherwise looks to be in good condition.

    $4.79
    Out of stock
    $4.79
    Add to cart
  • RACO

    USED, acquired from school surplus.Listing is for one (1) each refrigeration/freezer controls chart, Ranco K-Series, comes exactly as shown in the photo.

    $1.25
    1 in stock
  • Sporlan Valve Co.

    OLD STOCK, acquired from school surplus, unused, missing original packaging, may have minimal discoloration.Listing is for one (1) each pressure-temperature chart, Sporlan, designed to fold and fit wallet size, comes exactly as shown in the photo.• Temperature-Pressure Chart For 5000 Ft. Alt. 12F 22V 500D 502R 717A• Carrying Capacity of Refrigeration...

    $1.50
    25 in stock
  • Sporlan Valve Co.

    OLD STOCK, acquired from school surplus, unused, missing original packaging, may have minimal discoloration.Listing is for one (1) each pressure-temperature chart, Sporlan, for 5000 ft. altitude, designed to fold and fit wallet size, comes exactly as shown in the photo.Pressure-Temperature For Refrigerants:12 (F)22 (V)124 (Q)134a (J)401A (X)402A (L)404A...

    $1.25
    2 in stock
  • ALCO Controls

    OLD STOCK, acquired from school surplus, unused, missing original packaging, may have minimal discoloration.Listing is for one (1) each pressure-temperature chart, Sporlan, designed to fold and fit wallet size, comes exactly as shown in the photo.• Temperature-Pressure Chart For 5000 Ft. Altitude • For Refrigerants R12 R22 R502 AZ50 R134 MP39 HP62 HP80

    $1.50
    15 in stock
  • Whirlpool Corp.

    USED, acquired from school surplus, printed in USA 1973.Listing is for one (1) each dial-a-fix room air conditioner calculations, Whirlpool Corporation, comes exactly as shown in the photo.• A service tool to assist determining the load of a room air conditioner which has already been installed.

    $3.29
    1 in stock
  • Larkin Coils, Inc.

    USED, acquired from school surplus.Listing is for one (1) each walk-in cooler/freezer refrigeration chart, Larkin Coils Inc, glossy pocket size, comes exactly as shown in the photo.• Walk-In Cooler/Freezer Selection (9' High)• Walk-In Coolers With Glass Doors• HCL Condensing Unit Specifications

    $1.25
    1 in stock
  • Carrier Corp.

    POSSIBLY USED, Psychrometric Chart, acquired through school surplus, product markings include: wet-bulb, dew-point or saturation temperature, dry-bulb temperature, enthalpy at saturation, btu per pound of dry air, gains of moisture per pound of dry air, pounds of moisture per pound of dry air, sensible heat factor, enthalpy of added or rejected moisture,...

    $2.79
    Out of stock
    $2.79
    Add to cart
  • Carrier Corp.

    LOOKS TO BE USED, Psychrometric Chart, acquired through school surplus, product markings include: barometric pressure 29.921 inches of mercury, sensible heat ratio, wet bulb temperature, specific volume (cubic feet per lb. of dry air), humidity ratio (or specific humidity) gains of moisture per pound of dry air, dew point temperature, enthalpy (btu per...

    $2.49
    Out of stock
    $2.49
    Add to cart
  • ALCO Controls

    USED, acquired from school surplus.Listing is for one (1) each superheat calculator, ALCO Controls, comes exactly as shown in the photo.• Temperature (PSIG) For Refrigerants R-12, R-22, R-500, R-502• English-Metric Conversion Factors• English Conversion Factors• Alco Thermo Expansion Valve Charge Selector R-12, R-22, R-502

    $3.98
    1 in stock
  • USED, acquired from school surplus, copyright 1954-1956-1959.Listing is for one (1) each parliamentary law pocket slider, Benjamin J. Griffin, comes exactly as shown in the photo.• Question & Answers• Motions• Points Of OrderNote of Interest: Parliamentary misspelled on slider.

    $3.98
    1 in stock
  • International Metal Products Co.

    USED, International Metal Products Co. Air Cooling Calculator, acquired through school surplus, cosmetic wear, looks to be in good working condition. Product markings include: Velocity F.P.M., C.F.M., fraction per 100 foot of pipe, round duct diameter, larger rectangular duct dimension, smaller rectangular duct dimension, length in feet, width in feet,...

    $4.98
    Out of stock
    $4.98
    Add to cart
  • Lennox

    USED Lennox Heat Loss/Gain Guide, acquired through school surplus, product markings include: Heat gain guide for glass, wood doors, walls, partitions, ceilings, roofs and floors. Heat loss guide for windows, doors and exposed walls. Slide chart condition: bent marks, ink pen markings, missing corner rivet, pealing card stock near lower black tab,...

    $4.98
    Out of stock
    $4.98
    Add to cart
Showing 1 - 15 of 19 items

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