Cal Tech Plan · MetTutor v2.0
Built for the working
calibration technician.
Everything a calibration professional needs to deepen knowledge, master uncertainty, prepare for the ASQ CCT exam, and stay current with ISO 17025 and ILAC requirements — for $29 a month.
14-day free trial · No credit card required
Cal Tech Plan
$29/mo
or $23.20/mo billed annually
14-day free trial
No credit card required
What Cal Tech adds
Professional tools for professional work
Cal Tech builds on the full Student feature set with six capabilities designed specifically for working calibration technicians and CCT exam candidates.
Cal Tech+
110-Question CCT Mock Exam
A full-length, timed simulation of the ASQ Certified Calibration Technician exam. 110 questions across all CCT Body of Knowledge domains, delivered in exam conditions with a live countdown clock.
ASQ CCT · BoK-aligned
Cal Tech+
CCT Readiness Score & Pass Probability
After each mock exam, receive a readiness score and an estimated pass probability based on your performance across knowledge domains. See exactly which BoK areas need more work before exam day.
Readiness analytics
Cal Tech+
Spaced Repetition (SM-2 Algorithm)
MetTutor’s spaced repetition engine uses the SM-2 algorithm to schedule review of metrology concepts at the optimal interval for long-term retention — resurfacing material just before you’d forget it.
SM-2 · Adaptive scheduling
Cal Tech+
CCT Study Calendar
A personalized study plan built around your exam date and current readiness level. The calendar surfaces your SM-2 review sessions, daily quizzes, and mock exam windows so exam prep stays on track.
Personalized plan
Cal Tech+
ILAC P10 / P14 / P15 Compliance Guidance
Access ILAC policy guidance on measurement uncertainty in calibration (P10), use and statement of uncertainty (P14), and uncertainty in testing (P15) — critical references for accredited calibration laboratories.
ILAC · Accreditation
Cal Tech+
Auto-Read New Responses
Every new MetTutor response is automatically read aloud as it arrives — no need to trigger playback manually. Ideal for hands-free review in the lab, during calibration runs, or when reading long standard references.
Hands-free · Auto-play
CCT Mock Exam · Session 3
⏱ 1:47:32
Question 42 of 110 · Measurement Uncertainty
When combining Type A and Type B uncertainty components in a GUM-compliant budget, the result is expressed as the:
Study Calendar · May 2026
SM-2 Spaced Repetition
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CCT Exam Preparation
The most comprehensive CCT prep available.
The ASQ Certified Calibration Technician exam tests knowledge across seven Body of Knowledge domains — from measurement fundamentals to ISO 17025 requirements and uncertainty analysis. Cal Tech provides the full preparation toolkit.
The 110-question timed mock exam simulates actual exam conditions so you experience time pressure, question distribution, and domain coverage exactly as they appear on exam day. Your readiness score and pass probability update after each session, showing domain-by-domain gaps.
The SM-2 spaced repetition engine schedules review sessions for the concepts you’re most likely to forget, building durable, exam-ready knowledge rather than short-term recall.
110
Questions per mock exam session
7
CCT BoK domains covered
SM-2
Spaced repetition algorithm
100%
MetLibrary-grounded questions
Standards Coverage
Grounded in the standards that govern calibration.
Cal Tech’s answers, calculations, and guidance draw from the authoritative sources calibration professionals rely on every day.
GUM
JCGM 100:2008 & NIST GUM / TN 1297
Guide to the Expression of Uncertainty in Measurement
Step-by-step uncertainty budget calculations including Type A and Type B evaluation, combined standard uncertainty, expanded uncertainty, Welch-Satterthwaite degrees of freedom, and coverage factors.
Type A / Type B
uc calculation
Coverage factor k
Expanded uncertainty
ISO
ISO/IEC 17025:2017
General requirements for testing and calibration laboratories
Clause-level guidance across all sections of ISO 17025:2017 — from management system requirements (§8) to technical requirements for equipment (§6.4), metrological traceability (§6.6), and measurement uncertainty (§7.6).
§6.4 Equipment
§6.6 Traceability
§7.6 Uncertainty
§8 Management
Z540.3
ANSI/NCSL Z540.3
Requirements for the calibration of measuring and test equipment
Test uncertainty ratio (TUR) calculations aligned to Z540.3 requirements. Walk through TUR analysis step by step — understand the 4:1 rule, risk-based acceptance, and the relationship between TUR and false accept/reject probability.
TUR calculation
4:1 TUR rule
Risk-based acceptance
False accept/reject
ILAC
ILAC P10 / P14 / P15
ILAC policies on measurement uncertainty
ILAC compliance guidance covering uncertainty in calibration (P10), the use and statement of uncertainty (P14), and uncertainty in testing (P15). Essential for accredited calibration laboratories and A2LA/ILAC audit preparation.
P10 Calibration CMC
P14 Uncertainty statement
P15 Testing uncertainty
Accreditation prep
VIM
VIM · JCGM 200:2012
International Vocabulary of Metrology
Complete metrology vocabulary including official VIM definitions for traceability, measurand, measurement uncertainty, calibration, verification, and 500+ additional terms — authoritative definitions referenced in all CCT exam content.
500+ definitions
Traceability
Measurand
CCT vocabulary
CCT
ASQ CCT Body of Knowledge
Certified Calibration Technician exam framework
All exam preparation content is structured around the ASQ CCT Body of Knowledge — seven knowledge domains including metrology fundamentals, calibration procedures, measurement uncertainty, documentation, and quality systems.
7 BoK domains
Practice questions
Domain scoring
Full mock exam
Everything Included
Complete Cal Tech feature list
Cal Tech includes every Explorer and Student feature, plus the professional tools listed below.
Core & Learning
✓All 4 tutor modes (Concept, Problems, Exam Prep, Documents)
✓Unlimited AI messages
✓MetLibrary citations (950+ documents)
✓Metrology Skills Matrix
✓Concept of the Day (VIM vocabulary)
✓Unlimited daily quiz questions
✓Streak tracking & badges
✓Export: Word · Excel · PDF · CSV · TXT
Measurement Science
✓Metrology fundamentals & history
✓NIST SI units & NIST SP 811 conversions
✓Full VIM vocabulary (JCGM 200:2012)
✓Full GUM (JCGM 100) calculations
✓Uncertainty budget calculator
✓TUR calculator (ANSI/NCSL Z540.3)
✓ISO/IEC 17025:2017 clauses & guidance
Cal Tech Exclusives
✓110-question timed CCT mock exam NEW
✓CCT readiness score & pass probability NEW
✓Spaced repetition — SM-2 algorithm NEW
✓CCT study calendar NEW
✓ILAC P10 / P14 / P15 compliance guidance NEW
✓Auto-read new responses NEW
Voice & Accessibility
✓Microphone input (voice questions)
✓Read-aloud per message
✓Auto-read new responses
Billing
✓14-day free trial — no credit card required
✓Annual billing available (20% discount)
✓Cancel or change plan anytime
Need NCSLI, A2LA, or MSA/GR&R?
Cal Tech covers the core calibration professional toolkit. The Metrologist plan ($49/mo) adds the advanced standards, document validators, and compliance checkers that senior metrologists and CCT candidates need for the full picture.
- ✓NCSLI Recommended Practices (RP-1–12)
- ✓A2LA R101/R205 guidance
- ✓MSA / GR&R (AIAG MSA 4th ed.)
- ✓JCGM 106 decision rules
- ✓Uncertainty spreadsheet upload + AI analysis
- ✓Document validators & compliance checkers
Cal Tech FAQ
Common questions
Yes. The 14-day free trial provides complete access to every Cal Tech feature — including the CCT mock exam, spaced repetition, readiness scoring, ILAC guidance, and auto-read. No credit card is required to start the trial. At the end of 14 days, you can subscribe or return to the free Explorer plan.
The mock exam presents 110 questions drawn from across the seven ASQ CCT Body of Knowledge domains, with a live countdown timer matching actual exam conditions. At the end of each session, you receive a readiness score and estimated pass probability, broken down by domain. This shows you exactly where your preparation is strong and where to focus additional study. You can take the mock exam as many times as you like during your subscription.
Spaced repetition is a learning method that schedules review of material at increasing intervals, timed to just before you’d naturally forget it. The SM-2 algorithm — the same method behind tools like Anki — determines the optimal review interval based on how confidently you recalled the concept. In MetTutor, SM-2 is applied to metrology concepts from your quiz sessions and CCT prep, surfacing review prompts through the CCT study calendar so retention compounds over time rather than fading.
Absolutely. The CCT exam features are the most visible additions in Cal Tech, but the plan is built around daily professional use for any calibration technician. Full GUM uncertainty calculations, ISO 17025 clause guidance, TUR analysis (ANSI/NCSL Z540.3), ILAC P10/P14/P15 compliance guidance, unlimited quiz questions, and auto-read responses are all valuable without any intention to sit the CCT exam. If exam prep isn’t your goal, Cal Tech still gives you an AI-powered calibration reference that keeps you current with the standards that matter.
Cal Tech does not include: NCSLI Recommended Practices (RP-1–12), A2LA R101/R205 guidance, MSA/GR&R (AIAG MSA 4th ed.), JCGM 106 decision rules, uncertainty spreadsheet upload with AI analysis, or document validators and compliance checkers. These are available in the Metrologist plan at $49/month, which also includes a 14-day free trial. Team management and manager dashboard features are available in the Lab Manager plan.
Yes. Annual billing is available at a 20% discount — $23.20/month billed as $278.40/year instead of $29/month. You can switch billing cycles from your Account page. If you switch from monthly to annual, the new rate takes effect at your next billing date. You can cancel or change your plan at any time; there are no cancellation fees.
