C-737
INSTRUCTION MANUAL
SPOKE TENSION METER
Identification of parts and contents
Thank you for purchasing the HOZAN C-737 SPOKE TEN-
SION METER. With proper care and handling, this fine
instrument will provide years of trouble-free operation. Please
read this entire instruction manual carefully before attempting
to place this instrument in service. Please keep this instruction
manual available for reference.
Dial gauge
Zero adjustment ring
Handle
Contact pin
Pi ot pin
Clamp
１
１１
１
Specifications
Dimensions
Weight
170(W)×120(H)×30(D)mm
330g
#13, #14, #15 (plain)
Applicable spoke
Con ersion chart
*efer to the
clause 1. of
Caution
on page 2.
Accessory
Precautions
The C-737 is designed only for measurement of the tension of #13,
#14 and #15 bicycle spokes. Do not use for any other purpose.
１．The spoke tension is acquired in converting the suppleness
measure of the spoke into pressure value. The conversion
chart is individually provided with each C-737 trough the official
calibration, because each instrument has individual converting
value. Keep the conversion chart in a safe place together with
the C-737.
If you lose the conversion chart, the C-737 unit will need to be
re-calibrated.
２．Never loosen or tighten any of the screws, as doing so could
interfere with the adjustment so that the measurement results
no longer be accurate.
３．The C-737 is a precision tool, so handle it with care. Do not
throw it or drop it, otherwise it could not longer function
correctly.
４．Never attempt to disassemble or modify the C-737, otherwise it
could no longer function correctly.
５．The C-737 is to be used for measuring the tension of #13, #14
and #15 bicycle spokes only. It cannot be used to measure
different size or special type of spokes such as aero spokes.
Caution
These symbols are used throughout the instruction manual to alert
the user to potential safety hazards as follows :
Warning … Notice when incorrect handling could cause
the user's death or serious injury.
Caution … Notice when incorrect handling could cause injury
to the user or material damage.
Even if the instructions do not have Caution mark, there are
some possibilities for a serious situation. Follow the instructions.
Warning and caution symbols
Note on using this instrument
Measuring instrument such as the C-737 require periodic calibration.
The length of time between each calibration will vary depending on
the frequency of use, but in general, calibration should ideally be
carried out at least once a year. For any calibration requirement,
please contact HOZAN dealer.
２
２２
２
