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 through school surplus, expect fogginess on the slider, light scratches, otherwise looks to be in good physical condition and functions as expected.Listing is for one (1) each Danfoss Refrigerant Slide Rule, for R12, R22, R502, R717 calculations, comes exactly as shown in the photo.

    $12.49
    13 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 Ranco K-Series Refrigeration/Freezer Controls Card, acquired through school surplus, product markings include: GEM OC (direct and adapt), RANCO K (direct and adapt) and RANKO A (direct and adapt). Glossy card looks to be in nice condition.

    $1.25
    1 in stock
  • Sporlan Valve Co.

    LOOKS TO BE UNUSED, acquired through school surplus, 1991 Sporlan refrigerant chart for refrigerants 12, 22, 500, 502, and 717, folds into wallet size, product markings include: carrying capacity of refrigeration lines, approximate pressure control settings, temperature pressure chart (for altitude - 5000 feet above sea level, vacuum-inches of mercury,...

    $1.50
    25 in stock
  • Sporlan Valve Co.

    POSSIBLY USED, Pressure-Temperature Chart for altitude 5000 feet above sea level, acquired through school surplus, designed to fold and fit wallet size , product markings include: Sporlan, Refrigerants 12 (F), 22 (V), 124 (Q), 134a (J), MP39 OR 401A (X), HP80 OR 402A (L), HP62 OR 404A (S), KLEA 60 OR 407A, 9000 OR KLEA 66 407C (N), FX-56 OR 409A,502 (R),...

    $1.25
    2 in stock
  • ALCO Controls

    POSSIBLY USED, ALCO temperature pressure chart, acquired through school surplus, folds into wallet size, corrected for altitude 5000 feet above sea level, refrigerants R-12, R-22, R-502, AZ-50, R-134, MP-39, HP-62, HP-80. Chart looks to be in excellent condition.

    $1.50
    15 in stock
  • Whirlpool Corp.

    POSSIBLY USED, acquired through school surplus, Whirlpool Dial-A-Fix, room air conditioner calculations, a service tool to assist determining the load of a room air conditioner which has already been installed, dial-a-fix looks to be in excellent condition.

    $3.29
    1 in stock
  • Larkin Coils, Inc.

    USED Larkin Walk-In Cooler/Freezer Refrigeration Card, acquired through school surplus, product markings include: walk-in cooler selection (9' high - 90 degree ambient with 4", 6" and 8" foam insulation), walk in coolers with glass doors (35 degrees - 4" wall insulation - 90 degree ambient), HCL condensing unit specifications, glossy pocket size card...

    $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
    1 in stock
  • 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
    1 in stock
  • ALCO Controls

    GOOD CONDITION, acquired through school surplus, ALCO Controls Superheat Calculator, product markings include: temperature (PSIG) for R-12, R-22, R-500, and R-502 refrigerants, English-metric conversion factors, English conversion factors, Alco thermo expansion valve charge selector for R-12, R-22, and R-502 operating ranges.

    $3.98
    1 in stock
  • USED, Parliamentary Law Question & Answer Pocket Slider, motions and points of order, 1954-1956-1959 copyright date. Condition: cosmetic wear, slider appears to be in good working condition (note of interest: the word Parliamentary is misspelled on the 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
    1 in stock
  • 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
    1 in stock
Showing 1 - 15 of 19 items

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