Measuring Tapes

Question 1

• also known as surveyor’s or engineer’s tape
• made of a ribbon of steel 0.5 to 1.0 cm in width
• weights 0.8 to 1.5 kg per 30 meters
• For most conventional measurements in surveying and engineering work

Answer 1

Steel Tape

Question 2

• also called woven tapes
• made of water-proof linen fabric
  with woven small brass, copper, or
  bronze wires to increase its strength
  and reduce stretching
• for measuring short distances

Answer 2

Metallic Tape

Question 3

• woven from synthetic materials with strong dimensional
  stability
• coated with a plastic material to reduce effects of moisture,
  humidity, and abrasion

Answer 3

Non-metallic Tape

Question 4

• made of an alloy of nickel (35%) and steel (65%)
• very low coefficient of thermal expansion (1/30 to 1/60 that of a steel tape)
• “invariable” → less affected by temperature changes than steel tape
• used for precise measurements * 10 times as expensive as ordinary steel tapes

Answer 4

Invar Tape

Question 5

• properties and costs between conventional steel tapes
  and invar tapes

Answer 5

Lovar Tape

Question 6

• woven with fiberglass in a longitudinal and transverse pattern
• does not shrink or stretch with changes in temperature
  and humidity
• best used in vicinity of electrical equipment

Answer 6

Fiberglass Tape

Question 7

• used before thin flat steel tapes were produced
• still used in hydrographic survey

Answer 7

Wires

Question 8

• have smaller cross sections and lighter
  than steel tape
• used in building construction

Answer 8

Builder’s Tape

Question 9

• rust-proof tape to use in the vicinity of salt
  water

Answer 9

Phosphor-Bronze Tape

Question 10

• coated with permanently bonded non- conducting nylon
• resistant to corrosion and immune to rust

Answer 10

Nylon-coated Steel Tape